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Finding the Third Proportional to 91,878 and 202,380

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Solution

The third proportional to 91,878 and 202,380 is: 445,783.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,878 : 202,380 = 202,380 : x
  2. Step 2: Convert to fraction form
    91,878/202,380 = 202,380/x
  3. Step 3: Cross multiply
    91,878x = 202,380 × 202,380
  4. Step 4: Simplify right side
    91,878x = 40,957,664,400
  5. Step 5: Solve for x
    x = 40,957,664,400/91,878
  6. Step 6: Final answer
    x = 445,783.15

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.