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Finding the Third Proportional to 129,772.50 and 281,577

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Solution

The third proportional to 129,772.50 and 281,577 is: 610,958.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,772.50 : 281,577 = 281,577 : x
  2. Step 2: Convert to fraction form
    129,772.50/281,577 = 281,577/x
  3. Step 3: Cross multiply
    129,772.50x = 281,577 × 281,577
  4. Step 4: Simplify right side
    129,772.50x = 79,285,606,929
  5. Step 5: Solve for x
    x = 79,285,606,929/129,772.50
  6. Step 6: Final answer
    x = 610,958.46

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.