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Finding the Third Proportional to 176,518 and 378,308

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Solution

The third proportional to 176,518 and 378,308 is: 810,778.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    176,518 : 378,308 = 378,308 : x
  2. Step 2: Convert to fraction form
    176,518/378,308 = 378,308/x
  3. Step 3: Cross multiply
    176,518x = 378,308 × 378,308
  4. Step 4: Simplify right side
    176,518x = 143,116,942,864
  5. Step 5: Solve for x
    x = 143,116,942,864/176,518
  6. Step 6: Final answer
    x = 810,778.18

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.