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Finding the Fourth Proportional to 484,171.92, 668,242.17 and 280,190.43

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Solution

The fourth proportional to 484,171.92, 668,242.17 and 280,190.43 is: 386,711.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,171.92 : 668,242.17 = 280,190.43 : x
  2. Step 2: Convert to fraction form
    484,171.92/668,242.17 = 280,190.43/x
  3. Step 3: Cross multiply
    484,171.92x = 668,242.17 × 280,190.43
  4. Step 4: Simplify right side
    484,171.92x = 187,235,060,956.43
  5. Step 5: Solve for x
    x = 187,235,060,956.43/484,171.92
  6. Step 6: Final answer
    x = 386,711.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.