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Finding the Third Proportional to 281,018 and 421,533

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Solution

The third proportional to 281,018 and 421,533 is: 632,308.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,018 : 421,533 = 421,533 : x
  2. Step 2: Convert to fraction form
    281,018/421,533 = 421,533/x
  3. Step 3: Cross multiply
    281,018x = 421,533 × 421,533
  4. Step 4: Simplify right side
    281,018x = 177,690,070,089
  5. Step 5: Solve for x
    x = 177,690,070,089/281,018
  6. Step 6: Final answer
    x = 632,308.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.