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Finding the Fourth Proportional to 218,441.68, 327,789.90 and 92,074.20

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Solution

The fourth proportional to 218,441.68, 327,789.90 and 92,074.20 is: 138,164.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,441.68 : 327,789.90 = 92,074.20 : x
  2. Step 2: Convert to fraction form
    218,441.68/327,789.90 = 92,074.20/x
  3. Step 3: Cross multiply
    218,441.68x = 327,789.90 × 92,074.20
  4. Step 4: Simplify right side
    218,441.68x = 30,180,992,810.58
  5. Step 5: Solve for x
    x = 30,180,992,810.58/218,441.68
  6. Step 6: Final answer
    x = 138,164.99

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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.