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Finding the Third Proportional to 129,767 and 279,529

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Solution

The third proportional to 129,767 and 279,529 is: 602,128.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,767 : 279,529 = 279,529 : x
  2. Step 2: Convert to fraction form
    129,767/279,529 = 279,529/x
  3. Step 3: Cross multiply
    129,767x = 279,529 × 279,529
  4. Step 4: Simplify right side
    129,767x = 78,136,461,841
  5. Step 5: Solve for x
    x = 78,136,461,841/129,767
  6. Step 6: Final answer
    x = 602,128.91

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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.