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Finding the Third Proportional to 84,480 and 178,665

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Solution

The third proportional to 84,480 and 178,665 is: 377,854.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,480 : 178,665 = 178,665 : x
  2. Step 2: Convert to fraction form
    84,480/178,665 = 178,665/x
  3. Step 3: Cross multiply
    84,480x = 178,665 × 178,665
  4. Step 4: Simplify right side
    84,480x = 31,921,182,225
  5. Step 5: Solve for x
    x = 31,921,182,225/84,480
  6. Step 6: Final answer
    x = 377,854.90

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.