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Finding the Third Proportional to 129,356 and 282,757

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Solution

The third proportional to 129,356 and 282,757 is: 618,073.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,356 : 282,757 = 282,757 : x
  2. Step 2: Convert to fraction form
    129,356/282,757 = 282,757/x
  3. Step 3: Cross multiply
    129,356x = 282,757 × 282,757
  4. Step 4: Simplify right side
    129,356x = 79,951,521,049
  5. Step 5: Solve for x
    x = 79,951,521,049/129,356
  6. Step 6: Final answer
    x = 618,073.54

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.