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Finding the Fourth Proportional to 378,185.63, 567,345.91 and 125,481.28

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Solution

The fourth proportional to 378,185.63, 567,345.91 and 125,481.28 is: 188,244.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,185.63 : 567,345.91 = 125,481.28 : x
  2. Step 2: Convert to fraction form
    378,185.63/567,345.91 = 125,481.28/x
  3. Step 3: Cross multiply
    378,185.63x = 567,345.91 × 125,481.28
  4. Step 4: Simplify right side
    378,185.63x = 71,191,290,989.56
  5. Step 5: Solve for x
    x = 71,191,290,989.56/378,185.63
  6. Step 6: Final answer
    x = 188,244.30

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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.