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Finding the Fourth Proportional to 435,545.40, 653,294.87 and 135,991.71

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Solution

The fourth proportional to 435,545.40, 653,294.87 and 135,991.71 is: 203,980.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    435,545.40 : 653,294.87 = 135,991.71 : x
  2. Step 2: Convert to fraction form
    435,545.40/653,294.87 = 135,991.71/x
  3. Step 3: Cross multiply
    435,545.40x = 653,294.87 × 135,991.71
  4. Step 4: Simplify right side
    435,545.40x = 88,842,686,335.54
  5. Step 5: Solve for x
    x = 88,842,686,335.54/435,545.40
  6. Step 6: Final answer
    x = 203,980.31

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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.