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Finding the Fourth Proportional to 206,395.72, 284,829.30 and 115,771.80

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Solution

The fourth proportional to 206,395.72, 284,829.30 and 115,771.80 is: 159,766.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,395.72 : 284,829.30 = 115,771.80 : x
  2. Step 2: Convert to fraction form
    206,395.72/284,829.30 = 115,771.80/x
  3. Step 3: Cross multiply
    206,395.72x = 284,829.30 × 115,771.80
  4. Step 4: Simplify right side
    206,395.72x = 32,975,200,753.74
  5. Step 5: Solve for x
    x = 32,975,200,753.74/206,395.72
  6. Step 6: Final answer
    x = 159,766.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.