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Finding the Fourth Proportional to 379,216.52, 568,918.36 and 112,976

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Solution

The fourth proportional to 379,216.52, 568,918.36 and 112,976 is: 169,491.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,216.52 : 568,918.36 = 112,976 : x
  2. Step 2: Convert to fraction form
    379,216.52/568,918.36 = 112,976/x
  3. Step 3: Cross multiply
    379,216.52x = 568,918.36 × 112,976
  4. Step 4: Simplify right side
    379,216.52x = 64,274,120,639.36
  5. Step 5: Solve for x
    x = 64,274,120,639.36/379,216.52
  6. Step 6: Final answer
    x = 169,491.88

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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.