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Finding the Fourth Proportional to 415,454.28, 573,799.82 and 279,251.76

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Solution

The fourth proportional to 415,454.28, 573,799.82 and 279,251.76 is: 385,685.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,454.28 : 573,799.82 = 279,251.76 : x
  2. Step 2: Convert to fraction form
    415,454.28/573,799.82 = 279,251.76/x
  3. Step 3: Cross multiply
    415,454.28x = 573,799.82 × 279,251.76
  4. Step 4: Simplify right side
    415,454.28x = 160,234,609,622.68
  5. Step 5: Solve for x
    x = 160,234,609,622.68/415,454.28
  6. Step 6: Final answer
    x = 385,685.30

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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.