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Finding the Fourth Proportional to 271,147.92, 406,452.69 and 128,742.90

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Solution

The fourth proportional to 271,147.92, 406,452.69 and 128,742.90 is: 192,986.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,147.92 : 406,452.69 = 128,742.90 : x
  2. Step 2: Convert to fraction form
    271,147.92/406,452.69 = 128,742.90/x
  3. Step 3: Cross multiply
    271,147.92x = 406,452.69 × 128,742.90
  4. Step 4: Simplify right side
    271,147.92x = 52,327,898,023.40
  5. Step 5: Solve for x
    x = 52,327,898,023.40/271,147.92
  6. Step 6: Final answer
    x = 192,986.54

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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.