Finding the Fourth Proportional to 239,165,156.80, 330,047,915.52 and 129,156,862.24
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Solution
The fourth proportional to 239,165,156.80, 330,047,915.52 and 129,156,862.24 is: 178,236,469.42
Step by Step Solution
- Step 1: Write the proportion equation
239,165,156.80 : 330,047,915.52 = 129,156,862.24 : x - Step 2: Convert to fraction form
239,165,156.80/330,047,915.52 = 129,156,862.24/x - Step 3: Cross multiply
239,165,156.80x = 330,047,915.52 × 129,156,862.24 - Step 4: Simplify right side
239,165,156.80x = 42,627,953,157,415,792 - Step 5: Solve for x
x = 42,627,953,157,415,792/239,165,156.80 - Step 6: Final answer
x = 178,236,469.42
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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.