Is it permissible for those residing in the West for five families to share two rams and send the price of three rams to Palestine?

If the rams are for sacrifices, then it is not permissible to share the cost of a single sacrifice if it is a sheep.

However, if three families send the cost of their sacrifices to Palestine to be slaughtered there and their meat distributed as charity, then this is permissible.

As for the remaining rams for the two families, each family will have a complete sacrifice without sharing with other families, and they are permitted to gift a portion of it to the other families.

If the rams are not for sacrifice (such as for charity), then there is no harm in sharing their cost and donating a portion of it.