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Finding the Fourth Proportional to 442,847.28, 664,376.33 and 143,327.87

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Solution

The fourth proportional to 442,847.28, 664,376.33 and 143,327.87 is: 215,025.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,847.28 : 664,376.33 = 143,327.87 : x
  2. Step 2: Convert to fraction form
    442,847.28/664,376.33 = 143,327.87/x
  3. Step 3: Cross multiply
    442,847.28x = 664,376.33 × 143,327.87
  4. Step 4: Simplify right side
    442,847.28x = 95,223,640,218.80
  5. Step 5: Solve for x
    x = 95,223,640,218.80/442,847.28
  6. Step 6: Final answer
    x = 215,025.91

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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.