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Finding the Fourth Proportional to 218,129.49, 327,198.38 and 68,366.48

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Solution

The fourth proportional to 218,129.49, 327,198.38 and 68,366.48 is: 102,551.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,129.49 : 327,198.38 = 68,366.48 : x
  2. Step 2: Convert to fraction form
    218,129.49/327,198.38 = 68,366.48/x
  3. Step 3: Cross multiply
    218,129.49x = 327,198.38 × 68,366.48
  4. Step 4: Simplify right side
    218,129.49x = 22,369,399,524.48
  5. Step 5: Solve for x
    x = 22,369,399,524.48/218,129.49
  6. Step 6: Final answer
    x = 102,551.01

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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.