Home / 221,121.40-331,679.04-132,399.40

Finding the Fourth Proportional to 221,121.40, 331,679.04 and 132,399.40

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Solution

The fourth proportional to 221,121.40, 331,679.04 and 132,399.40 is: 198,597.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,121.40 : 331,679.04 = 132,399.40 : x
  2. Step 2: Convert to fraction form
    221,121.40/331,679.04 = 132,399.40/x
  3. Step 3: Cross multiply
    221,121.40x = 331,679.04 × 132,399.40
  4. Step 4: Simplify right side
    221,121.40x = 43,914,105,888.58
  5. Step 5: Solve for x
    x = 43,914,105,888.58/221,121.40
  6. Step 6: Final answer
    x = 198,597.27

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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.