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Finding the Fourth Proportional to 424,248.62, 636,402.09 and 124,736.54

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Solution

The fourth proportional to 424,248.62, 636,402.09 and 124,736.54 is: 187,113.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,248.62 : 636,402.09 = 124,736.54 : x
  2. Step 2: Convert to fraction form
    424,248.62/636,402.09 = 124,736.54/x
  3. Step 3: Cross multiply
    424,248.62x = 636,402.09 × 124,736.54
  4. Step 4: Simplify right side
    424,248.62x = 79,382,594,755.37
  5. Step 5: Solve for x
    x = 79,382,594,755.37/424,248.62
  6. Step 6: Final answer
    x = 187,113.38

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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.