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Finding the Fourth Proportional to 278,588.87, 417,883.77 and 89,064.52

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Solution

The fourth proportional to 278,588.87, 417,883.77 and 89,064.52 is: 133,596.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,588.87 : 417,883.77 = 89,064.52 : x
  2. Step 2: Convert to fraction form
    278,588.87/417,883.77 = 89,064.52/x
  3. Step 3: Cross multiply
    278,588.87x = 417,883.77 × 89,064.52
  4. Step 4: Simplify right side
    278,588.87x = 37,218,614,856.10
  5. Step 5: Solve for x
    x = 37,218,614,856.10/278,588.87
  6. Step 6: Final answer
    x = 133,596.92

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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.