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Finding the Third Proportional to 129,110 and 284,320

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Solution

The third proportional to 129,110 and 284,320 is: 626,116.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,110 : 284,320 = 284,320 : x
  2. Step 2: Convert to fraction form
    129,110/284,320 = 284,320/x
  3. Step 3: Cross multiply
    129,110x = 284,320 × 284,320
  4. Step 4: Simplify right side
    129,110x = 80,837,862,400
  5. Step 5: Solve for x
    x = 80,837,862,400/129,110
  6. Step 6: Final answer
    x = 626,116.20

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.