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Finding the Third Proportional to 129,785 and 281,602

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Solution

The third proportional to 129,785 and 281,602 is: 611,008.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,785 : 281,602 = 281,602 : x
  2. Step 2: Convert to fraction form
    129,785/281,602 = 281,602/x
  3. Step 3: Cross multiply
    129,785x = 281,602 × 281,602
  4. Step 4: Simplify right side
    129,785x = 79,299,686,404
  5. Step 5: Solve for x
    x = 79,299,686,404/129,785
  6. Step 6: Final answer
    x = 611,008.10

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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.