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Finding the Fourth Proportional to 203,281.60, 304,922.40 and 132,422.80

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Solution

The fourth proportional to 203,281.60, 304,922.40 and 132,422.80 is: 198,634.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,281.60 : 304,922.40 = 132,422.80 : x
  2. Step 2: Convert to fraction form
    203,281.60/304,922.40 = 132,422.80/x
  3. Step 3: Cross multiply
    203,281.60x = 304,922.40 × 132,422.80
  4. Step 4: Simplify right side
    203,281.60x = 40,378,677,990.72
  5. Step 5: Solve for x
    x = 40,378,677,990.72/203,281.60
  6. Step 6: Final answer
    x = 198,634.20

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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.