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Finding the Third Proportional to 256,329 and 394,533

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Solution

The third proportional to 256,329 and 394,533 is: 607,251.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,329 : 394,533 = 394,533 : x
  2. Step 2: Convert to fraction form
    256,329/394,533 = 394,533/x
  3. Step 3: Cross multiply
    256,329x = 394,533 × 394,533
  4. Step 4: Simplify right side
    256,329x = 155,656,288,089
  5. Step 5: Solve for x
    x = 155,656,288,089/256,329
  6. Step 6: Final answer
    x = 607,251.96

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.