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Finding the Third Proportional to 204,028 and 316,686

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Solution

The third proportional to 204,028 and 316,686 is: 491,550.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,028 : 316,686 = 316,686 : x
  2. Step 2: Convert to fraction form
    204,028/316,686 = 316,686/x
  3. Step 3: Cross multiply
    204,028x = 316,686 × 316,686
  4. Step 4: Simplify right side
    204,028x = 100,290,022,596
  5. Step 5: Solve for x
    x = 100,290,022,596/204,028
  6. Step 6: Final answer
    x = 491,550.29

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.