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Finding the Third Proportional to 81,459 and 180,414

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Solution

The third proportional to 81,459 and 180,414 is: 399,577.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,459 : 180,414 = 180,414 : x
  2. Step 2: Convert to fraction form
    81,459/180,414 = 180,414/x
  3. Step 3: Cross multiply
    81,459x = 180,414 × 180,414
  4. Step 4: Simplify right side
    81,459x = 32,549,211,396
  5. Step 5: Solve for x
    x = 32,549,211,396/81,459
  6. Step 6: Final answer
    x = 399,577.84

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Why These Related Problems?

These problems maintain the same ratio (2.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.