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Finding the Fourth Proportional to 218,445.27, 327,711.66 and 68,723.25

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Solution

The fourth proportional to 218,445.27, 327,711.66 and 68,723.25 is: 103,098.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,445.27 : 327,711.66 = 68,723.25 : x
  2. Step 2: Convert to fraction form
    218,445.27/327,711.66 = 68,723.25/x
  3. Step 3: Cross multiply
    218,445.27x = 327,711.66 × 68,723.25
  4. Step 4: Simplify right side
    218,445.27x = 22,521,410,338.10
  5. Step 5: Solve for x
    x = 22,521,410,338.10/218,445.27
  6. Step 6: Final answer
    x = 103,098.64

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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.