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Finding the Fourth Proportional to 523,169.64, 721,997.82 and 308,318.76

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Solution

The fourth proportional to 523,169.64, 721,997.82 and 308,318.76 is: 425,493.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    523,169.64 : 721,997.82 = 308,318.76 : x
  2. Step 2: Convert to fraction form
    523,169.64/721,997.82 = 308,318.76/x
  3. Step 3: Cross multiply
    523,169.64x = 721,997.82 × 308,318.76
  4. Step 4: Simplify right side
    523,169.64x = 222,605,472,585.10
  5. Step 5: Solve for x
    x = 222,605,472,585.10/523,169.64
  6. Step 6: Final answer
    x = 425,493.87

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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.