Home / 218,500.32-327,756.96-85,375.20

Finding the Fourth Proportional to 218,500.32, 327,756.96 and 85,375.20

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Solution

The fourth proportional to 218,500.32, 327,756.96 and 85,375.20 is: 128,065.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,500.32 : 327,756.96 = 85,375.20 : x
  2. Step 2: Convert to fraction form
    218,500.32/327,756.96 = 85,375.20/x
  3. Step 3: Cross multiply
    218,500.32x = 327,756.96 × 85,375.20
  4. Step 4: Simplify right side
    218,500.32x = 27,982,316,011.39
  5. Step 5: Solve for x
    x = 27,982,316,011.39/218,500.32
  6. Step 6: Final answer
    x = 128,065.33

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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.