Home / 221,101.80-331,458.30-132,390.60

Finding the Fourth Proportional to 221,101.80, 331,458.30 and 132,390.60

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Solution

The fourth proportional to 221,101.80, 331,458.30 and 132,390.60 is: 198,469.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,101.80 : 331,458.30 = 132,390.60 : x
  2. Step 2: Convert to fraction form
    221,101.80/331,458.30 = 132,390.60/x
  3. Step 3: Cross multiply
    221,101.80x = 331,458.30 × 132,390.60
  4. Step 4: Simplify right side
    221,101.80x = 43,881,963,211.98
  5. Step 5: Solve for x
    x = 43,881,963,211.98/221,101.80
  6. Step 6: Final answer
    x = 198,469.50

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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.