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Finding the Fourth Proportional to 218,123.88, 327,185.91 and 68,375.94

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Solution

The fourth proportional to 218,123.88, 327,185.91 and 68,375.94 is: 102,563.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,123.88 : 327,185.91 = 68,375.94 : x
  2. Step 2: Convert to fraction form
    218,123.88/327,185.91 = 68,375.94/x
  3. Step 3: Cross multiply
    218,123.88x = 327,185.91 × 68,375.94
  4. Step 4: Simplify right side
    218,123.88x = 22,371,644,151.01
  5. Step 5: Solve for x
    x = 22,371,644,151.01/218,123.88
  6. Step 6: Final answer
    x = 102,563.94

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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.