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Finding the Fourth Proportional to 215,371.96, 323,019 and 75,170.68

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Solution

The fourth proportional to 215,371.96, 323,019 and 75,170.68 is: 112,742.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,371.96 : 323,019 = 75,170.68 : x
  2. Step 2: Convert to fraction form
    215,371.96/323,019 = 75,170.68/x
  3. Step 3: Cross multiply
    215,371.96x = 323,019 × 75,170.68
  4. Step 4: Simplify right side
    215,371.96x = 24,281,557,882.92
  5. Step 5: Solve for x
    x = 24,281,557,882.92/215,371.96
  6. Step 6: Final answer
    x = 112,742.43

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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.