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Finding the Third Proportional to 256,140 and 551,736

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Solution

The third proportional to 256,140 and 551,736 is: 1,188,461.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,140 : 551,736 = 551,736 : x
  2. Step 2: Convert to fraction form
    256,140/551,736 = 551,736/x
  3. Step 3: Cross multiply
    256,140x = 551,736 × 551,736
  4. Step 4: Simplify right side
    256,140x = 304,412,613,696
  5. Step 5: Solve for x
    x = 304,412,613,696/256,140
  6. Step 6: Final answer
    x = 1,188,461.83

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.