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Finding the Fourth Proportional to 378,775.13, 568,257.88 and 108,903.78

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Solution

The fourth proportional to 378,775.13, 568,257.88 and 108,903.78 is: 163,383.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,775.13 : 568,257.88 = 108,903.78 : x
  2. Step 2: Convert to fraction form
    378,775.13/568,257.88 = 108,903.78/x
  3. Step 3: Cross multiply
    378,775.13x = 568,257.88 × 108,903.78
  4. Step 4: Simplify right side
    378,775.13x = 61,885,427,760.98
  5. Step 5: Solve for x
    x = 61,885,427,760.98/378,775.13
  6. Step 6: Final answer
    x = 163,383.03

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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.