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Finding the Fourth Proportional to 378,838.80, 568,347.12 and 112,601.52

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Solution

The fourth proportional to 378,838.80, 568,347.12 and 112,601.52 is: 168,928.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,838.80 : 568,347.12 = 112,601.52 : x
  2. Step 2: Convert to fraction form
    378,838.80/568,347.12 = 112,601.52/x
  3. Step 3: Cross multiply
    378,838.80x = 568,347.12 × 112,601.52
  4. Step 4: Simplify right side
    378,838.80x = 63,996,749,599.62
  5. Step 5: Solve for x
    x = 63,996,749,599.62/378,838.80
  6. Step 6: Final answer
    x = 168,928.71

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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.