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Finding the Third Proportional to 176,420 and 387,832

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Solution

The third proportional to 176,420 and 387,832 is: 852,588.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    176,420 : 387,832 = 387,832 : x
  2. Step 2: Convert to fraction form
    176,420/387,832 = 387,832/x
  3. Step 3: Cross multiply
    176,420x = 387,832 × 387,832
  4. Step 4: Simplify right side
    176,420x = 150,413,660,224
  5. Step 5: Solve for x
    x = 150,413,660,224/176,420
  6. Step 6: Final answer
    x = 852,588.48

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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.