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Finding the Fourth Proportional to 218,219.67, 327,318.98 and 76,059.20

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Solution

The fourth proportional to 218,219.67, 327,318.98 and 76,059.20 is: 114,085.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,219.67 : 327,318.98 = 76,059.20 : x
  2. Step 2: Convert to fraction form
    218,219.67/327,318.98 = 76,059.20/x
  3. Step 3: Cross multiply
    218,219.67x = 327,318.98 × 76,059.20
  4. Step 4: Simplify right side
    218,219.67x = 24,895,620,201.62
  5. Step 5: Solve for x
    x = 24,895,620,201.62/218,219.67
  6. Step 6: Final answer
    x = 114,085.13

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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.