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Finding the Fourth Proportional to 263,294.36, 394,952.78 and 103,404.95

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Solution

The fourth proportional to 263,294.36, 394,952.78 and 103,404.95 is: 155,111.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,294.36 : 394,952.78 = 103,404.95 : x
  2. Step 2: Convert to fraction form
    263,294.36/394,952.78 = 103,404.95/x
  3. Step 3: Cross multiply
    263,294.36x = 394,952.78 × 103,404.95
  4. Step 4: Simplify right side
    263,294.36x = 40,840,070,493.50
  5. Step 5: Solve for x
    x = 40,840,070,493.50/263,294.36
  6. Step 6: Final answer
    x = 155,111.83

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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.