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Finding the Third Proportional to 122,956 and 250,420

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Solution

The third proportional to 122,956 and 250,420 is: 510,021.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,956 : 250,420 = 250,420 : x
  2. Step 2: Convert to fraction form
    122,956/250,420 = 250,420/x
  3. Step 3: Cross multiply
    122,956x = 250,420 × 250,420
  4. Step 4: Simplify right side
    122,956x = 62,710,176,400
  5. Step 5: Solve for x
    x = 62,710,176,400/122,956
  6. Step 6: Final answer
    x = 510,021.28

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Why These Related Problems?

These problems maintain the same ratio (2.04) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.