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Finding the Fourth Proportional to 279,745.43, 419,621.03 and 223,940.25

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Solution

The fourth proportional to 279,745.43, 419,621.03 and 223,940.25 is: 335,912.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,745.43 : 419,621.03 = 223,940.25 : x
  2. Step 2: Convert to fraction form
    279,745.43/419,621.03 = 223,940.25/x
  3. Step 3: Cross multiply
    279,745.43x = 419,621.03 × 223,940.25
  4. Step 4: Simplify right side
    279,745.43x = 93,970,037,243.76
  5. Step 5: Solve for x
    x = 93,970,037,243.76/279,745.43
  6. Step 6: Final answer
    x = 335,912.69

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1.5x scale

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.