Home / 378,834.72-568,139.04-312,109.44

Finding the Fourth Proportional to 378,834.72, 568,139.04 and 312,109.44

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Solution

The fourth proportional to 378,834.72, 568,139.04 and 312,109.44 is: 468,071.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,834.72 : 568,139.04 = 312,109.44 : x
  2. Step 2: Convert to fraction form
    378,834.72/568,139.04 = 312,109.44/x
  3. Step 3: Cross multiply
    378,834.72x = 568,139.04 × 312,109.44
  4. Step 4: Simplify right side
    378,834.72x = 177,321,557,616.54
  5. Step 5: Solve for x
    x = 177,321,557,616.54/378,834.72
  6. Step 6: Final answer
    x = 468,071.03

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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.