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Finding the Third Proportional to 139,122 and 302,908

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Solution

The third proportional to 139,122 and 302,908 is: 659,516.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,122 : 302,908 = 302,908 : x
  2. Step 2: Convert to fraction form
    139,122/302,908 = 302,908/x
  3. Step 3: Cross multiply
    139,122x = 302,908 × 302,908
  4. Step 4: Simplify right side
    139,122x = 91,753,256,464
  5. Step 5: Solve for x
    x = 91,753,256,464/139,122
  6. Step 6: Final answer
    x = 659,516.51

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.