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Finding the Fourth Proportional to 361,911.41, 543,144.25 and 260,660.83

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Solution

The fourth proportional to 361,911.41, 543,144.25 and 260,660.83 is: 391,190.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,911.41 : 543,144.25 = 260,660.83 : x
  2. Step 2: Convert to fraction form
    361,911.41/543,144.25 = 260,660.83/x
  3. Step 3: Cross multiply
    361,911.41x = 543,144.25 × 260,660.83
  4. Step 4: Simplify right side
    361,911.41x = 141,576,431,014.73
  5. Step 5: Solve for x
    x = 141,576,431,014.73/361,911.41
  6. Step 6: Final answer
    x = 391,190.85

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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.