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Finding the Third Proportional to 322,272 and 490,512

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Solution

The third proportional to 322,272 and 490,512 is: 746,580.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,272 : 490,512 = 490,512 : x
  2. Step 2: Convert to fraction form
    322,272/490,512 = 490,512/x
  3. Step 3: Cross multiply
    322,272x = 490,512 × 490,512
  4. Step 4: Simplify right side
    322,272x = 240,602,022,144
  5. Step 5: Solve for x
    x = 240,602,022,144/322,272
  6. Step 6: Final answer
    x = 746,580.60

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.