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Finding the Fourth Proportional to 218,755.28, 328,151.45 and 60,983.89

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Solution

The fourth proportional to 218,755.28, 328,151.45 and 60,983.89 is: 91,481.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,755.28 : 328,151.45 = 60,983.89 : x
  2. Step 2: Convert to fraction form
    218,755.28/328,151.45 = 60,983.89/x
  3. Step 3: Cross multiply
    218,755.28x = 328,151.45 × 60,983.89
  4. Step 4: Simplify right side
    218,755.28x = 20,011,951,262.22
  5. Step 5: Solve for x
    x = 20,011,951,262.22/218,755.28
  6. Step 6: Final answer
    x = 91,481.00

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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.