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Finding the Third Proportional to 256,367 and 560,980

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Solution

The third proportional to 256,367 and 560,980 is: 1,227,531.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,367 : 560,980 = 560,980 : x
  2. Step 2: Convert to fraction form
    256,367/560,980 = 560,980/x
  3. Step 3: Cross multiply
    256,367x = 560,980 × 560,980
  4. Step 4: Simplify right side
    256,367x = 314,698,560,400
  5. Step 5: Solve for x
    x = 314,698,560,400/256,367
  6. Step 6: Final answer
    x = 1,227,531.47

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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.