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Finding the Third Proportional to 129,110 and 279,666

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Solution

The third proportional to 129,110 and 279,666 is: 605,786.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,110 : 279,666 = 279,666 : x
  2. Step 2: Convert to fraction form
    129,110/279,666 = 279,666/x
  3. Step 3: Cross multiply
    129,110x = 279,666 × 279,666
  4. Step 4: Simplify right side
    129,110x = 78,213,071,556
  5. Step 5: Solve for x
    x = 78,213,071,556/129,110
  6. Step 6: Final answer
    x = 605,786.32

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.