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Finding the Third Proportional to 129,080 and 283,685

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Solution

The third proportional to 129,080 and 283,685 is: 623,467.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,080 : 283,685 = 283,685 : x
  2. Step 2: Convert to fraction form
    129,080/283,685 = 283,685/x
  3. Step 3: Cross multiply
    129,080x = 283,685 × 283,685
  4. Step 4: Simplify right side
    129,080x = 80,477,179,225
  5. Step 5: Solve for x
    x = 80,477,179,225/129,080
  6. Step 6: Final answer
    x = 623,467.46

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.