Home / 378,943.12-568,473-126,136.90

Finding the Fourth Proportional to 378,943.12, 568,473 and 126,136.90

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Solution

The fourth proportional to 378,943.12, 568,473 and 126,136.90 is: 189,224.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,943.12 : 568,473 = 126,136.90 : x
  2. Step 2: Convert to fraction form
    378,943.12/568,473 = 126,136.90/x
  3. Step 3: Cross multiply
    378,943.12x = 568,473 × 126,136.90
  4. Step 4: Simplify right side
    378,943.12x = 71,705,421,953.70
  5. Step 5: Solve for x
    x = 71,705,421,953.70/378,943.12
  6. Step 6: Final answer
    x = 189,224.76

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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.