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Finding the Fourth Proportional to 218,414.79, 327,668.96 and 123,689.75

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Solution

The fourth proportional to 218,414.79, 327,668.96 and 123,689.75 is: 185,561.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,414.79 : 327,668.96 = 123,689.75 : x
  2. Step 2: Convert to fraction form
    218,414.79/327,668.96 = 123,689.75/x
  3. Step 3: Cross multiply
    218,414.79x = 327,668.96 × 123,689.75
  4. Step 4: Simplify right side
    218,414.79x = 40,529,291,745.16
  5. Step 5: Solve for x
    x = 40,529,291,745.16/218,414.79
  6. Step 6: Final answer
    x = 185,561.11

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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.