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Finding the Fourth Proportional to 206,691.60, 309,576.60 and 169,827.60

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Solution

The fourth proportional to 206,691.60, 309,576.60 and 169,827.60 is: 254,362.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,691.60 : 309,576.60 = 169,827.60 : x
  2. Step 2: Convert to fraction form
    206,691.60/309,576.60 = 169,827.60/x
  3. Step 3: Cross multiply
    206,691.60x = 309,576.60 × 169,827.60
  4. Step 4: Simplify right side
    206,691.60x = 52,574,650,994.16
  5. Step 5: Solve for x
    x = 52,574,650,994.16/206,691.60
  6. Step 6: Final answer
    x = 254,362.78

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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.