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Finding the Fourth Proportional to 378,076.75, 567,198.17 and 111,816.51

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Solution

The fourth proportional to 378,076.75, 567,198.17 and 111,816.51 is: 167,749.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,076.75 : 567,198.17 = 111,816.51 : x
  2. Step 2: Convert to fraction form
    378,076.75/567,198.17 = 111,816.51/x
  3. Step 3: Cross multiply
    378,076.75x = 567,198.17 × 111,816.51
  4. Step 4: Simplify right side
    378,076.75x = 63,422,119,847.79
  5. Step 5: Solve for x
    x = 63,422,119,847.79/378,076.75
  6. Step 6: Final answer
    x = 167,749.33

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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.