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Finding the Fourth Proportional to 378,458.85, 567,797.86 and 112,225.78

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Solution

The fourth proportional to 378,458.85, 567,797.86 and 112,225.78 is: 168,371.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,458.85 : 567,797.86 = 112,225.78 : x
  2. Step 2: Convert to fraction form
    378,458.85/567,797.86 = 112,225.78/x
  3. Step 3: Cross multiply
    378,458.85x = 567,797.86 × 112,225.78
  4. Step 4: Simplify right side
    378,458.85x = 63,721,557,720.83
  5. Step 5: Solve for x
    x = 63,721,557,720.83/378,458.85
  6. Step 6: Final answer
    x = 168,371.17

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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.