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Finding the Third Proportional to 213,066 and 318,132

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Solution

The third proportional to 213,066 and 318,132 is: 475,007.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,066 : 318,132 = 318,132 : x
  2. Step 2: Convert to fraction form
    213,066/318,132 = 318,132/x
  3. Step 3: Cross multiply
    213,066x = 318,132 × 318,132
  4. Step 4: Simplify right side
    213,066x = 101,207,969,424
  5. Step 5: Solve for x
    x = 101,207,969,424/213,066
  6. Step 6: Final answer
    x = 475,007.60

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.