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Finding the Fourth Proportional to 424,363.71, 636,565.47 and 140,079.03

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Solution

The fourth proportional to 424,363.71, 636,565.47 and 140,079.03 is: 210,125.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,363.71 : 636,565.47 = 140,079.03 : x
  2. Step 2: Convert to fraction form
    424,363.71/636,565.47 = 140,079.03/x
  3. Step 3: Cross multiply
    424,363.71x = 636,565.47 × 140,079.03
  4. Step 4: Simplify right side
    424,363.71x = 89,169,473,569.09
  5. Step 5: Solve for x
    x = 89,169,473,569.09/424,363.71
  6. Step 6: Final answer
    x = 210,125.12

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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.