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Finding the Third Proportional to 129,397.50 and 274,347

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Solution

The third proportional to 129,397.50 and 274,347 is: 581,667.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,397.50 : 274,347 = 274,347 : x
  2. Step 2: Convert to fraction form
    129,397.50/274,347 = 274,347/x
  3. Step 3: Cross multiply
    129,397.50x = 274,347 × 274,347
  4. Step 4: Simplify right side
    129,397.50x = 75,266,276,409
  5. Step 5: Solve for x
    x = 75,266,276,409/129,397.50
  6. Step 6: Final answer
    x = 581,667.16

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.