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Finding the Fourth Proportional to 206,655.55, 309,691.73 and 101,242.15

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Solution

The fourth proportional to 206,655.55, 309,691.73 and 101,242.15 is: 151,720.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,655.55 : 309,691.73 = 101,242.15 : x
  2. Step 2: Convert to fraction form
    206,655.55/309,691.73 = 101,242.15/x
  3. Step 3: Cross multiply
    206,655.55x = 309,691.73 × 101,242.15
  4. Step 4: Simplify right side
    206,655.55x = 31,353,856,076.21
  5. Step 5: Solve for x
    x = 31,353,856,076.21/206,655.55
  6. Step 6: Final answer
    x = 151,720.37

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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.