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Finding the Fourth Proportional to 424,125.97, 636,053.97 and 139,763.48

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Solution

The fourth proportional to 424,125.97, 636,053.97 and 139,763.48 is: 209,600.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,125.97 : 636,053.97 = 139,763.48 : x
  2. Step 2: Convert to fraction form
    424,125.97/636,053.97 = 139,763.48/x
  3. Step 3: Cross multiply
    424,125.97x = 636,053.97 × 139,763.48
  4. Step 4: Simplify right side
    424,125.97x = 88,897,112,872.69
  5. Step 5: Solve for x
    x = 88,897,112,872.69/424,125.97
  6. Step 6: Final answer
    x = 209,600.73

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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.