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Finding the Third Proportional to 133,080 and 206,453

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Solution

The third proportional to 133,080 and 206,453 is: 320,279.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,080 : 206,453 = 206,453 : x
  2. Step 2: Convert to fraction form
    133,080/206,453 = 206,453/x
  3. Step 3: Cross multiply
    133,080x = 206,453 × 206,453
  4. Step 4: Simplify right side
    133,080x = 42,622,841,209
  5. Step 5: Solve for x
    x = 42,622,841,209/133,080
  6. Step 6: Final answer
    x = 320,279.84

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.