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Finding the Third Proportional to 127,980 and 274,914

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Solution

The third proportional to 127,980 and 274,914 is: 590,543.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,980 : 274,914 = 274,914 : x
  2. Step 2: Convert to fraction form
    127,980/274,914 = 274,914/x
  3. Step 3: Cross multiply
    127,980x = 274,914 × 274,914
  4. Step 4: Simplify right side
    127,980x = 75,577,707,396
  5. Step 5: Solve for x
    x = 75,577,707,396/127,980
  6. Step 6: Final answer
    x = 590,543.11

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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.