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Finding the Fourth Proportional to 273,739.20, 410,025.60 and 221,251.20

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Solution

The fourth proportional to 273,739.20, 410,025.60 and 221,251.20 is: 331,405.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,739.20 : 410,025.60 = 221,251.20 : x
  2. Step 2: Convert to fraction form
    273,739.20/410,025.60 = 221,251.20/x
  3. Step 3: Cross multiply
    273,739.20x = 410,025.60 × 221,251.20
  4. Step 4: Simplify right side
    273,739.20x = 90,718,656,030.72
  5. Step 5: Solve for x
    x = 90,718,656,030.72/273,739.20
  6. Step 6: Final answer
    x = 331,405.43

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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.