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Finding the Fourth Proportional to 218,374.56, 327,568.32 and 85,249.44

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Solution

The fourth proportional to 218,374.56, 327,568.32 and 85,249.44 is: 127,876.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,374.56 : 327,568.32 = 85,249.44 : x
  2. Step 2: Convert to fraction form
    218,374.56/327,568.32 = 85,249.44/x
  3. Step 3: Cross multiply
    218,374.56x = 327,568.32 × 85,249.44
  4. Step 4: Simplify right side
    218,374.56x = 27,925,015,841.74
  5. Step 5: Solve for x
    x = 27,925,015,841.74/218,374.56
  6. Step 6: Final answer
    x = 127,876.69

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1.5x scale

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.