The average weight of a blue whale is 4 * 10 ^ 5 pounds. The average weight of an elephant is 1 * 10 ^ 4 pounds. Approximately how many times heavier is a blue whale than an elephant in pounds?

To find out how many times heavier a blue whale is than an elephant, we need to divide the weight of the blue whale by the weight of the elephant.

Blue whale weight: 4 * 10^5 pounds
Elephant weight: 1 * 10^4 pounds

Blue whale weight / Elephant weight = (4 * 10^5) / (1 * 10^4)
= (4/1) * (10^5/10^4)
= 4 * 10^(5-4)
= 4 * 10^1
= 4 * 10
= 40

Therefore, a blue whale is approximately 40 times heavier than an elephant in pounds.