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Finding the Fourth Proportional to 218,239.37, 327,372.90 and 68,485.57

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Solution

The fourth proportional to 218,239.37, 327,372.90 and 68,485.57 is: 102,732.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,239.37 : 327,372.90 = 68,485.57 : x
  2. Step 2: Convert to fraction form
    218,239.37/327,372.90 = 68,485.57/x
  3. Step 3: Cross multiply
    218,239.37x = 327,372.90 × 68,485.57
  4. Step 4: Simplify right side
    218,239.37x = 22,420,318,583.80
  5. Step 5: Solve for x
    x = 22,420,318,583.80/218,239.37
  6. Step 6: Final answer
    x = 102,732.70

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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.