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Finding the Fourth Proportional to 499,062.28, 748,371.06 and 143,991.91

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Solution

The fourth proportional to 499,062.28, 748,371.06 and 143,991.91 is: 215,923.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,062.28 : 748,371.06 = 143,991.91 : x
  2. Step 2: Convert to fraction form
    499,062.28/748,371.06 = 143,991.91/x
  3. Step 3: Cross multiply
    499,062.28x = 748,371.06 × 143,991.91
  4. Step 4: Simplify right side
    499,062.28x = 107,759,378,318.13
  5. Step 5: Solve for x
    x = 107,759,378,318.13/499,062.28
  6. Step 6: Final answer
    x = 215,923.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.