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Finding the Fourth Proportional to 263,108.31, 394,656.96 and 105,294.39

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Solution

The fourth proportional to 263,108.31, 394,656.96 and 105,294.39 is: 157,939.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,108.31 : 394,656.96 = 105,294.39 : x
  2. Step 2: Convert to fraction form
    263,108.31/394,656.96 = 105,294.39/x
  3. Step 3: Cross multiply
    263,108.31x = 394,656.96 × 105,294.39
  4. Step 4: Simplify right side
    263,108.31x = 41,555,163,862.45
  5. Step 5: Solve for x
    x = 41,555,163,862.45/263,108.31
  6. Step 6: Final answer
    x = 157,939.38

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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.