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Finding the Fourth Proportional to 424,402.48, 636,645.33 and 154,603.97

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Solution

The fourth proportional to 424,402.48, 636,645.33 and 154,603.97 is: 231,921.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,402.48 : 636,645.33 = 154,603.97 : x
  2. Step 2: Convert to fraction form
    424,402.48/636,645.33 = 154,603.97/x
  3. Step 3: Cross multiply
    424,402.48x = 636,645.33 × 154,603.97
  4. Step 4: Simplify right side
    424,402.48x = 98,427,892,316.73
  5. Step 5: Solve for x
    x = 98,427,892,316.73/424,402.48
  6. Step 6: Final answer
    x = 231,921.11

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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.