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Finding the Third Proportional to 126,171 and 278,586

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Solution

The third proportional to 126,171 and 278,586 is: 615,118.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,171 : 278,586 = 278,586 : x
  2. Step 2: Convert to fraction form
    126,171/278,586 = 278,586/x
  3. Step 3: Cross multiply
    126,171x = 278,586 × 278,586
  4. Step 4: Simplify right side
    126,171x = 77,610,159,396
  5. Step 5: Solve for x
    x = 77,610,159,396/126,171
  6. Step 6: Final answer
    x = 615,118.84

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Why These Related Problems?

These problems maintain the same ratio (2.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.