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Finding the Third Proportional to 118,247 and 253,990

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Solution

The third proportional to 118,247 and 253,990 is: 545,560.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,247 : 253,990 = 253,990 : x
  2. Step 2: Convert to fraction form
    118,247/253,990 = 253,990/x
  3. Step 3: Cross multiply
    118,247x = 253,990 × 253,990
  4. Step 4: Simplify right side
    118,247x = 64,510,920,100
  5. Step 5: Solve for x
    x = 64,510,920,100/118,247
  6. Step 6: Final answer
    x = 545,560.73

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.