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Finding the Third Proportional to 129,422 and 283,066

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Solution

The third proportional to 129,422 and 283,066 is: 619,109.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,422 : 283,066 = 283,066 : x
  2. Step 2: Convert to fraction form
    129,422/283,066 = 283,066/x
  3. Step 3: Cross multiply
    129,422x = 283,066 × 283,066
  4. Step 4: Simplify right side
    129,422x = 80,126,360,356
  5. Step 5: Solve for x
    x = 80,126,360,356/129,422
  6. Step 6: Final answer
    x = 619,109.27

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.