Home / 221,288.40-331,738.20-132,447.60

Finding the Fourth Proportional to 221,288.40, 331,738.20 and 132,447.60

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Solution

The fourth proportional to 221,288.40, 331,738.20 and 132,447.60 is: 198,555.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,288.40 : 331,738.20 = 132,447.60 : x
  2. Step 2: Convert to fraction form
    221,288.40/331,738.20 = 132,447.60/x
  3. Step 3: Cross multiply
    221,288.40x = 331,738.20 × 132,447.60
  4. Step 4: Simplify right side
    221,288.40x = 43,937,928,418.32
  5. Step 5: Solve for x
    x = 43,937,928,418.32/221,288.40
  6. Step 6: Final answer
    x = 198,555.05

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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.