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Finding the Third Proportional to 253,376 and 356,320

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Solution

The third proportional to 253,376 and 356,320 is: 501,089.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,376 : 356,320 = 356,320 : x
  2. Step 2: Convert to fraction form
    253,376/356,320 = 356,320/x
  3. Step 3: Cross multiply
    253,376x = 356,320 × 356,320
  4. Step 4: Simplify right side
    253,376x = 126,963,942,400
  5. Step 5: Solve for x
    x = 126,963,942,400/253,376
  6. Step 6: Final answer
    x = 501,089.06

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.