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Finding the Third Proportional to 127,876 and 278,647

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Solution

The third proportional to 127,876 and 278,647 is: 607,183.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,876 : 278,647 = 278,647 : x
  2. Step 2: Convert to fraction form
    127,876/278,647 = 278,647/x
  3. Step 3: Cross multiply
    127,876x = 278,647 × 278,647
  4. Step 4: Simplify right side
    127,876x = 77,644,150,609
  5. Step 5: Solve for x
    x = 77,644,150,609/127,876
  6. Step 6: Final answer
    x = 607,183.14

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.