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Finding the Third Proportional to 129,276 and 271,188

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Solution

The third proportional to 129,276 and 271,188 is: 568,883.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,276 : 271,188 = 271,188 : x
  2. Step 2: Convert to fraction form
    129,276/271,188 = 271,188/x
  3. Step 3: Cross multiply
    129,276x = 271,188 × 271,188
  4. Step 4: Simplify right side
    129,276x = 73,542,931,344
  5. Step 5: Solve for x
    x = 73,542,931,344/129,276
  6. Step 6: Final answer
    x = 568,883.10

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.