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Finding the Fourth Proportional to 218,039.55, 327,059.33 and 68,291.56

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Solution

The fourth proportional to 218,039.55, 327,059.33 and 68,291.56 is: 102,437.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,039.55 : 327,059.33 = 68,291.56 : x
  2. Step 2: Convert to fraction form
    218,039.55/327,059.33 = 68,291.56/x
  3. Step 3: Cross multiply
    218,039.55x = 327,059.33 × 68,291.56
  4. Step 4: Simplify right side
    218,039.55x = 22,335,391,925.62
  5. Step 5: Solve for x
    x = 22,335,391,925.62/218,039.55
  6. Step 6: Final answer
    x = 102,437.34

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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.