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Finding the Third Proportional to 256,708 and 556,180

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Solution

The third proportional to 256,708 and 556,180 is: 1,205,011.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,708 : 556,180 = 556,180 : x
  2. Step 2: Convert to fraction form
    256,708/556,180 = 556,180/x
  3. Step 3: Cross multiply
    256,708x = 556,180 × 556,180
  4. Step 4: Simplify right side
    256,708x = 309,336,192,400
  5. Step 5: Solve for x
    x = 309,336,192,400/256,708
  6. Step 6: Final answer
    x = 1,205,011.89

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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.