One more formula question...

Ok, here is the scenario I encountered while playing 5-150 spread limit. 5 people see a flop for $100 each. The flop comes 972 with 2 hearts. I have AK with the A of hearts. One player bets $150 all in. Assuming I know he has TT or JJ, and assuming I know the other 3 players will fold, do I have the correct odds to call? According to my calculations I have a 24.2% chance to hit an A or K with 2 cards to come. And I am only investing 23.1% with my $150 call. However, I'm not sure how to factor in my chances of hitting runner, runner nut flush, or factor out his chances of making a set. Anyone know a formula on this?
Thanks.