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Finding the Fourth Proportional to 278,451.13, 417,673.17 and 88,909.10

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Solution

The fourth proportional to 278,451.13, 417,673.17 and 88,909.10 is: 133,362.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,451.13 : 417,673.17 = 88,909.10 : x
  2. Step 2: Convert to fraction form
    278,451.13/417,673.17 = 88,909.10/x
  3. Step 3: Cross multiply
    278,451.13x = 417,673.17 × 88,909.10
  4. Step 4: Simplify right side
    278,451.13x = 37,134,943,550.48
  5. Step 5: Solve for x
    x = 37,134,943,550.48/278,451.13
  6. Step 6: Final answer
    x = 133,362.52

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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.