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Finding the Fourth Proportional to 172,654,268.60, 258,981,402.90 and 164,691,644.60

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Solution

The fourth proportional to 172,654,268.60, 258,981,402.90 and 164,691,644.60 is: 247,037,466.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,654,268.60 : 258,981,402.90 = 164,691,644.60 : x
  2. Step 2: Convert to fraction form
    172,654,268.60/258,981,402.90 = 164,691,644.60/x
  3. Step 3: Cross multiply
    172,654,268.60x = 258,981,402.90 × 164,691,644.60
  4. Step 4: Simplify right side
    172,654,268.60x = 42,652,073,164,416,208
  5. Step 5: Solve for x
    x = 42,652,073,164,416,208/172,654,268.60
  6. Step 6: Final answer
    x = 247,037,466.90

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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.