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Finding the Fourth Proportional to 378,745.60, 568,317.12 and 142,251.52

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Solution

The fourth proportional to 378,745.60, 568,317.12 and 142,251.52 is: 213,451.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,745.60 : 568,317.12 = 142,251.52 : x
  2. Step 2: Convert to fraction form
    378,745.60/568,317.12 = 142,251.52/x
  3. Step 3: Cross multiply
    378,745.60x = 568,317.12 × 142,251.52
  4. Step 4: Simplify right side
    378,745.60x = 80,843,974,162.02
  5. Step 5: Solve for x
    x = 80,843,974,162.02/378,745.60
  6. Step 6: Final answer
    x = 213,451.92

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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.