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Finding the Third Proportional to 135,680 and 297,280

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Solution

The third proportional to 135,680 and 297,280 is: 651,351.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,680 : 297,280 = 297,280 : x
  2. Step 2: Convert to fraction form
    135,680/297,280 = 297,280/x
  3. Step 3: Cross multiply
    135,680x = 297,280 × 297,280
  4. Step 4: Simplify right side
    135,680x = 88,375,398,400
  5. Step 5: Solve for x
    x = 88,375,398,400/135,680
  6. Step 6: Final answer
    x = 651,351.70

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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.