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Finding the Fourth Proportional to 424,862, 637,293 and 129,374

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Solution

The fourth proportional to 424,862, 637,293 and 129,374 is: 194,061

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,862 : 637,293 = 129,374 : x
  2. Step 2: Convert to fraction form
    424,862/637,293 = 129,374/x
  3. Step 3: Cross multiply
    424,862x = 637,293 × 129,374
  4. Step 4: Simplify right side
    424,862x = 82,449,144,582
  5. Step 5: Solve for x
    x = 82,449,144,582/424,862
  6. Step 6: Final answer
    x = 194,061

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.