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Finding the Fourth Proportional to 381,268.80, 571,531.41 and 181,535.49

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Solution

The fourth proportional to 381,268.80, 571,531.41 and 181,535.49 is: 272,126.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,268.80 : 571,531.41 = 181,535.49 : x
  2. Step 2: Convert to fraction form
    381,268.80/571,531.41 = 181,535.49/x
  3. Step 3: Cross multiply
    381,268.80x = 571,531.41 × 181,535.49
  4. Step 4: Simplify right side
    381,268.80x = 103,753,234,564.74
  5. Step 5: Solve for x
    x = 103,753,234,564.74/381,268.80
  6. Step 6: Final answer
    x = 272,126.21

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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.