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Finding the Fourth Proportional to 378,081.56, 567,122.32 and 111,821.36

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Solution

The fourth proportional to 378,081.56, 567,122.32 and 111,821.36 is: 167,732.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,081.56 : 567,122.32 = 111,821.36 : x
  2. Step 2: Convert to fraction form
    378,081.56/567,122.32 = 111,821.36/x
  3. Step 3: Cross multiply
    378,081.56x = 567,122.32 × 111,821.36
  4. Step 4: Simplify right side
    378,081.56x = 63,416,389,108.76
  5. Step 5: Solve for x
    x = 63,416,389,108.76/378,081.56
  6. Step 6: Final answer
    x = 167,732.03

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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.