Home / 221,015.28-331,620.92-115,809.20

Finding the Fourth Proportional to 221,015.28, 331,620.92 and 115,809.20

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Solution

The fourth proportional to 221,015.28, 331,620.92 and 115,809.20 is: 173,765.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,015.28 : 331,620.92 = 115,809.20 : x
  2. Step 2: Convert to fraction form
    221,015.28/331,620.92 = 115,809.20/x
  3. Step 3: Cross multiply
    221,015.28x = 331,620.92 × 115,809.20
  4. Step 4: Simplify right side
    221,015.28x = 38,404,753,448.46
  5. Step 5: Solve for x
    x = 38,404,753,448.46/221,015.28
  6. Step 6: Final answer
    x = 173,765.15

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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.