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Finding the Fourth Proportional to 218,591.76, 327,899.34 and 68,843.71

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Solution

The fourth proportional to 218,591.76, 327,899.34 and 68,843.71 is: 103,269.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,591.76 : 327,899.34 = 68,843.71 : x
  2. Step 2: Convert to fraction form
    218,591.76/327,899.34 = 68,843.71/x
  3. Step 3: Cross multiply
    218,591.76x = 327,899.34 × 68,843.71
  4. Step 4: Simplify right side
    218,591.76x = 22,573,807,072.15
  5. Step 5: Solve for x
    x = 22,573,807,072.15/218,591.76
  6. Step 6: Final answer
    x = 103,269.25

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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.