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Finding the Third Proportional to 178,186 and 266,406

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Solution

The third proportional to 178,186 and 266,406 is: 398,303.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,186 : 266,406 = 266,406 : x
  2. Step 2: Convert to fraction form
    178,186/266,406 = 266,406/x
  3. Step 3: Cross multiply
    178,186x = 266,406 × 266,406
  4. Step 4: Simplify right side
    178,186x = 70,972,156,836
  5. Step 5: Solve for x
    x = 70,972,156,836/178,186
  6. Step 6: Final answer
    x = 398,303.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.