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Finding the Third Proportional to 256,443 and 558,036.75

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Solution

The third proportional to 256,443 and 558,036.75 is: 1,214,324.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,443 : 558,036.75 = 558,036.75 : x
  2. Step 2: Convert to fraction form
    256,443/558,036.75 = 558,036.75/x
  3. Step 3: Cross multiply
    256,443x = 558,036.75 × 558,036.75
  4. Step 4: Simplify right side
    256,443x = 311,405,014,350.56
  5. Step 5: Solve for x
    x = 311,405,014,350.56/256,443
  6. Step 6: Final answer
    x = 1,214,324.49

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.