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Finding the Third Proportional to 129,389.06 and 281,559.38

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Solution

The third proportional to 129,389.06 and 281,559.38 is: 612,692.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,389.06 : 281,559.38 = 281,559.38 : x
  2. Step 2: Convert to fraction form
    129,389.06/281,559.38 = 281,559.38/x
  3. Step 3: Cross multiply
    129,389.06x = 281,559.38 × 281,559.38
  4. Step 4: Simplify right side
    129,389.06x = 79,275,681,650.39
  5. Step 5: Solve for x
    x = 79,275,681,650.39/129,389.06
  6. Step 6: Final answer
    x = 612,692.29

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.