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Finding the Fourth Proportional to 253,338.87, 379,793.67 and 111,076.33

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Solution

The fourth proportional to 253,338.87, 379,793.67 and 111,076.33 is: 166,520.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,338.87 : 379,793.67 = 111,076.33 : x
  2. Step 2: Convert to fraction form
    253,338.87/379,793.67 = 111,076.33/x
  3. Step 3: Cross multiply
    253,338.87x = 379,793.67 × 111,076.33
  4. Step 4: Simplify right side
    253,338.87x = 42,186,085,121.86
  5. Step 5: Solve for x
    x = 42,186,085,121.86/253,338.87
  6. Step 6: Final answer
    x = 166,520.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.