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Finding the Third Proportional to 251,380 and 542,120

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Solution

The third proportional to 251,380 and 542,120 is: 1,169,122.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,380 : 542,120 = 542,120 : x
  2. Step 2: Convert to fraction form
    251,380/542,120 = 542,120/x
  3. Step 3: Cross multiply
    251,380x = 542,120 × 542,120
  4. Step 4: Simplify right side
    251,380x = 293,894,094,400
  5. Step 5: Solve for x
    x = 293,894,094,400/251,380
  6. Step 6: Final answer
    x = 1,169,122.82

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.