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Finding the Third Proportional to 129,905 and 279,149

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Solution

The third proportional to 129,905 and 279,149 is: 599,855.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,905 : 279,149 = 279,149 : x
  2. Step 2: Convert to fraction form
    129,905/279,149 = 279,149/x
  3. Step 3: Cross multiply
    129,905x = 279,149 × 279,149
  4. Step 4: Simplify right side
    129,905x = 77,924,164,201
  5. Step 5: Solve for x
    x = 77,924,164,201/129,905
  6. Step 6: Final answer
    x = 599,855.00

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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.