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Finding the Fourth Proportional to 279,545.48, 419,385.25 and 90,023.71

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Solution

The fourth proportional to 279,545.48, 419,385.25 and 90,023.71 is: 135,057.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,545.48 : 419,385.25 = 90,023.71 : x
  2. Step 2: Convert to fraction form
    279,545.48/419,385.25 = 90,023.71/x
  3. Step 3: Cross multiply
    279,545.48x = 419,385.25 × 90,023.71
  4. Step 4: Simplify right side
    279,545.48x = 37,754,614,027.35
  5. Step 5: Solve for x
    x = 37,754,614,027.35/279,545.48
  6. Step 6: Final answer
    x = 135,057.14

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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.