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Finding the Third Proportional to 127,122 and 279,780

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Solution

The third proportional to 127,122 and 279,780 is: 615,761.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,122 : 279,780 = 279,780 : x
  2. Step 2: Convert to fraction form
    127,122/279,780 = 279,780/x
  3. Step 3: Cross multiply
    127,122x = 279,780 × 279,780
  4. Step 4: Simplify right side
    127,122x = 78,276,848,400
  5. Step 5: Solve for x
    x = 78,276,848,400/127,122
  6. Step 6: Final answer
    x = 615,761.62

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.