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Finding the Third Proportional to 267,812 and 355,420

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Solution

The third proportional to 267,812 and 355,420 is: 471,686.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,812 : 355,420 = 355,420 : x
  2. Step 2: Convert to fraction form
    267,812/355,420 = 355,420/x
  3. Step 3: Cross multiply
    267,812x = 355,420 × 355,420
  4. Step 4: Simplify right side
    267,812x = 126,323,376,400
  5. Step 5: Solve for x
    x = 126,323,376,400/267,812
  6. Step 6: Final answer
    x = 471,686.77

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.