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Finding the Fourth Proportional to 218,084.80, 327,126.78 and 68,336.56

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Solution

The fourth proportional to 218,084.80, 327,126.78 and 68,336.56 is: 102,504.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,084.80 : 327,126.78 = 68,336.56 : x
  2. Step 2: Convert to fraction form
    218,084.80/327,126.78 = 68,336.56/x
  3. Step 3: Cross multiply
    218,084.80x = 327,126.78 × 68,336.56
  4. Step 4: Simplify right side
    218,084.80x = 22,354,718,829.08
  5. Step 5: Solve for x
    x = 22,354,718,829.08/218,084.80
  6. Step 6: Final answer
    x = 102,504.71

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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.