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Finding the Third Proportional to 118,704 and 280,212

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Solution

The third proportional to 118,704 and 280,212 is: 661,466.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,704 : 280,212 = 280,212 : x
  2. Step 2: Convert to fraction form
    118,704/280,212 = 280,212/x
  3. Step 3: Cross multiply
    118,704x = 280,212 × 280,212
  4. Step 4: Simplify right side
    118,704x = 78,518,764,944
  5. Step 5: Solve for x
    x = 78,518,764,944/118,704
  6. Step 6: Final answer
    x = 661,466.88

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Why These Related Problems?

These problems maintain the same ratio (2.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.