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Finding the Fourth Proportional to 218,414.30, 327,621.08 and 68,667.66

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Solution

The fourth proportional to 218,414.30, 327,621.08 and 68,667.66 is: 103,001.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,414.30 : 327,621.08 = 68,667.66 : x
  2. Step 2: Convert to fraction form
    218,414.30/327,621.08 = 68,667.66/x
  3. Step 3: Cross multiply
    218,414.30x = 327,621.08 × 68,667.66
  4. Step 4: Simplify right side
    218,414.30x = 22,496,973,101.94
  5. Step 5: Solve for x
    x = 22,496,973,101.94/218,414.30
  6. Step 6: Final answer
    x = 103,001.38

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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.