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Finding the Third Proportional to 129,765 and 280,266

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Solution

The third proportional to 129,765 and 280,266 is: 605,317.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,765 : 280,266 = 280,266 : x
  2. Step 2: Convert to fraction form
    129,765/280,266 = 280,266/x
  3. Step 3: Cross multiply
    129,765x = 280,266 × 280,266
  4. Step 4: Simplify right side
    129,765x = 78,549,030,756
  5. Step 5: Solve for x
    x = 78,549,030,756/129,765
  6. Step 6: Final answer
    x = 605,317.54

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.