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Finding the Third Proportional to 129,882 and 279,828

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Solution

The third proportional to 129,882 and 279,828 is: 602,883.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,882 : 279,828 = 279,828 : x
  2. Step 2: Convert to fraction form
    129,882/279,828 = 279,828/x
  3. Step 3: Cross multiply
    129,882x = 279,828 × 279,828
  4. Step 4: Simplify right side
    129,882x = 78,303,709,584
  5. Step 5: Solve for x
    x = 78,303,709,584/129,882
  6. Step 6: Final answer
    x = 602,883.46

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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.