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Finding the Fourth Proportional to 378,821.62, 568,324.99 and 126,101.62

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Solution

The fourth proportional to 378,821.62, 568,324.99 and 126,101.62 is: 189,183.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,821.62 : 568,324.99 = 126,101.62 : x
  2. Step 2: Convert to fraction form
    378,821.62/568,324.99 = 126,101.62/x
  3. Step 3: Cross multiply
    378,821.62x = 568,324.99 × 126,101.62
  4. Step 4: Simplify right side
    378,821.62x = 71,666,701,925.48
  5. Step 5: Solve for x
    x = 71,666,701,925.48/378,821.62
  6. Step 6: Final answer
    x = 189,183.24

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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.