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Finding the Fourth Proportional to 424,209.96, 636,424.29 and 124,700.31

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Solution

The fourth proportional to 424,209.96, 636,424.29 and 124,700.31 is: 187,082.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,209.96 : 636,424.29 = 124,700.31 : x
  2. Step 2: Convert to fraction form
    424,209.96/636,424.29 = 124,700.31/x
  3. Step 3: Cross multiply
    424,209.96x = 636,424.29 × 124,700.31
  4. Step 4: Simplify right side
    424,209.96x = 79,362,306,254.53
  5. Step 5: Solve for x
    x = 79,362,306,254.53/424,209.96
  6. Step 6: Final answer
    x = 187,082.61

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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.