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Finding the Third Proportional to 126,908 and 272,956

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Solution

The third proportional to 126,908 and 272,956 is: 587,078.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,908 : 272,956 = 272,956 : x
  2. Step 2: Convert to fraction form
    126,908/272,956 = 272,956/x
  3. Step 3: Cross multiply
    126,908x = 272,956 × 272,956
  4. Step 4: Simplify right side
    126,908x = 74,504,977,936
  5. Step 5: Solve for x
    x = 74,504,977,936/126,908
  6. Step 6: Final answer
    x = 587,078.65

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.