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Finding the Third Proportional to 256,532 and 556,866

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Solution

The third proportional to 256,532 and 556,866 is: 1,208,815.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,532 : 556,866 = 556,866 : x
  2. Step 2: Convert to fraction form
    256,532/556,866 = 556,866/x
  3. Step 3: Cross multiply
    256,532x = 556,866 × 556,866
  4. Step 4: Simplify right side
    256,532x = 310,099,741,956
  5. Step 5: Solve for x
    x = 310,099,741,956/256,532
  6. Step 6: Final answer
    x = 1,208,815.05

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.