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Finding the Third Proportional to 269,520 and 421,536

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Solution

The third proportional to 269,520 and 421,536 is: 659,292.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,520 : 421,536 = 421,536 : x
  2. Step 2: Convert to fraction form
    269,520/421,536 = 421,536/x
  3. Step 3: Cross multiply
    269,520x = 421,536 × 421,536
  4. Step 4: Simplify right side
    269,520x = 177,692,599,296
  5. Step 5: Solve for x
    x = 177,692,599,296/269,520
  6. Step 6: Final answer
    x = 659,292.81

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.