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Finding the Fourth Proportional to 278,292.90, 417,472.56 and 88,687.56

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Solution

The fourth proportional to 278,292.90, 417,472.56 and 88,687.56 is: 133,041.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,292.90 : 417,472.56 = 88,687.56 : x
  2. Step 2: Convert to fraction form
    278,292.90/417,472.56 = 88,687.56/x
  3. Step 3: Cross multiply
    278,292.90x = 417,472.56 × 88,687.56
  4. Step 4: Simplify right side
    278,292.90x = 37,024,622,713.35
  5. Step 5: Solve for x
    x = 37,024,622,713.35/278,292.90
  6. Step 6: Final answer
    x = 133,041.92

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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.