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Finding the Fourth Proportional to 424,275.47, 636,690.22 and 158,248.79

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Solution

The fourth proportional to 424,275.47, 636,690.22 and 158,248.79 is: 237,476.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,275.47 : 636,690.22 = 158,248.79 : x
  2. Step 2: Convert to fraction form
    424,275.47/636,690.22 = 158,248.79/x
  3. Step 3: Cross multiply
    424,275.47x = 636,690.22 × 158,248.79
  4. Step 4: Simplify right side
    424,275.47x = 100,755,456,919.83
  5. Step 5: Solve for x
    x = 100,755,456,919.83/424,275.47
  6. Step 6: Final answer
    x = 237,476.51

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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.