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Finding the Third Proportional to 222,309 and 486,980

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Solution

The third proportional to 222,309 and 486,980 is: 1,066,756.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,309 : 486,980 = 486,980 : x
  2. Step 2: Convert to fraction form
    222,309/486,980 = 486,980/x
  3. Step 3: Cross multiply
    222,309x = 486,980 × 486,980
  4. Step 4: Simplify right side
    222,309x = 237,149,520,400
  5. Step 5: Solve for x
    x = 237,149,520,400/222,309
  6. Step 6: Final answer
    x = 1,066,756.27

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.