Home / 378,944.12-568,474.50-126,137.90

Finding the Fourth Proportional to 378,944.12, 568,474.50 and 126,137.90

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Solution

The fourth proportional to 378,944.12, 568,474.50 and 126,137.90 is: 189,226.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,944.12 : 568,474.50 = 126,137.90 : x
  2. Step 2: Convert to fraction form
    378,944.12/568,474.50 = 126,137.90/x
  3. Step 3: Cross multiply
    378,944.12x = 568,474.50 × 126,137.90
  4. Step 4: Simplify right side
    378,944.12x = 71,706,179,633.55
  5. Step 5: Solve for x
    x = 71,706,179,633.55/378,944.12
  6. Step 6: Final answer
    x = 189,226.26

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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.