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Finding the Fourth Proportional to 484,194.80, 668,270.40 and 280,251.20

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Solution

The fourth proportional to 484,194.80, 668,270.40 and 280,251.20 is: 386,793.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,194.80 : 668,270.40 = 280,251.20 : x
  2. Step 2: Convert to fraction form
    484,194.80/668,270.40 = 280,251.20/x
  3. Step 3: Cross multiply
    484,194.80x = 668,270.40 × 280,251.20
  4. Step 4: Simplify right side
    484,194.80x = 187,283,581,524.48
  5. Step 5: Solve for x
    x = 187,283,581,524.48/484,194.80
  6. Step 6: Final answer
    x = 386,793.87

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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.