Finding the Fourth Proportional to 239,398,809.53, 330,370,207.88 and 129,390,522.53
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Solution
The fourth proportional to 239,398,809.53, 330,370,207.88 and 129,390,522.53 is: 178,558,840.41
Step by Step Solution
- Step 1: Write the proportion equation
239,398,809.53 : 330,370,207.88 = 129,390,522.53 : x - Step 2: Convert to fraction form
239,398,809.53/330,370,207.88 = 129,390,522.53/x - Step 3: Cross multiply
239,398,809.53x = 330,370,207.88 × 129,390,522.53 - Step 4: Simplify right side
239,398,809.53x = 42,746,773,823,639,120 - Step 5: Solve for x
x = 42,746,773,823,639,120/239,398,809.53 - Step 6: Final answer
x = 178,558,840.41
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.