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Finding the Fourth Proportional to 219,825.20, 329,737.80 and 204,078.80

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Solution

The fourth proportional to 219,825.20, 329,737.80 and 204,078.80 is: 306,118.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,825.20 : 329,737.80 = 204,078.80 : x
  2. Step 2: Convert to fraction form
    219,825.20/329,737.80 = 204,078.80/x
  3. Step 3: Cross multiply
    219,825.20x = 329,737.80 × 204,078.80
  4. Step 4: Simplify right side
    219,825.20x = 67,292,494,538.64
  5. Step 5: Solve for x
    x = 67,292,494,538.64/219,825.20
  6. Step 6: Final answer
    x = 306,118.20

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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.