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Finding the Fourth Proportional to 378,772.74, 568,236.87 and 112,509.54

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Solution

The fourth proportional to 378,772.74, 568,236.87 and 112,509.54 is: 168,787.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,772.74 : 568,236.87 = 112,509.54 : x
  2. Step 2: Convert to fraction form
    378,772.74/568,236.87 = 112,509.54/x
  3. Step 3: Cross multiply
    378,772.74x = 568,236.87 × 112,509.54
  4. Step 4: Simplify right side
    378,772.74x = 63,932,068,854.74
  5. Step 5: Solve for x
    x = 63,932,068,854.74/378,772.74
  6. Step 6: Final answer
    x = 168,787.41

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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.