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Finding the Fourth Proportional to 221,032.80, 331,354.80 and 132,321.60

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Solution

The fourth proportional to 221,032.80, 331,354.80 and 132,321.60 is: 198,366.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,032.80 : 331,354.80 = 132,321.60 : x
  2. Step 2: Convert to fraction form
    221,032.80/331,354.80 = 132,321.60/x
  3. Step 3: Cross multiply
    221,032.80x = 331,354.80 × 132,321.60
  4. Step 4: Simplify right side
    221,032.80x = 43,845,397,303.68
  5. Step 5: Solve for x
    x = 43,845,397,303.68/221,032.80
  6. Step 6: Final answer
    x = 198,366.02

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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.