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Finding the Fourth Proportional to 415,463.28, 573,812.24 and 279,260.76

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Solution

The fourth proportional to 415,463.28, 573,812.24 and 279,260.76 is: 385,697.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,463.28 : 573,812.24 = 279,260.76 : x
  2. Step 2: Convert to fraction form
    415,463.28/573,812.24 = 279,260.76/x
  3. Step 3: Cross multiply
    415,463.28x = 573,812.24 × 279,260.76
  4. Step 4: Simplify right side
    415,463.28x = 160,243,242,239.70
  5. Step 5: Solve for x
    x = 160,243,242,239.70/415,463.28
  6. Step 6: Final answer
    x = 385,697.73

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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.