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Finding the Third Proportional to 122,721 and 253,272

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Solution

The third proportional to 122,721 and 253,272 is: 522,703.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,721 : 253,272 = 253,272 : x
  2. Step 2: Convert to fraction form
    122,721/253,272 = 253,272/x
  3. Step 3: Cross multiply
    122,721x = 253,272 × 253,272
  4. Step 4: Simplify right side
    122,721x = 64,146,705,984
  5. Step 5: Solve for x
    x = 64,146,705,984/122,721
  6. Step 6: Final answer
    x = 522,703.58

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Why These Related Problems?

These problems maintain the same ratio (2.06) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.