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Finding the Fourth Proportional to 206,597.20, 309,895.80 and 173,136.10

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Solution

The fourth proportional to 206,597.20, 309,895.80 and 173,136.10 is: 259,704.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,597.20 : 309,895.80 = 173,136.10 : x
  2. Step 2: Convert to fraction form
    206,597.20/309,895.80 = 173,136.10/x
  3. Step 3: Cross multiply
    206,597.20x = 309,895.80 × 173,136.10
  4. Step 4: Simplify right side
    206,597.20x = 53,654,150,218.38
  5. Step 5: Solve for x
    x = 53,654,150,218.38/206,597.20
  6. Step 6: Final answer
    x = 259,704.15

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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.