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Finding the Fourth Proportional to 219,870.80, 329,806.20 and 196,251.20

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Solution

The fourth proportional to 219,870.80, 329,806.20 and 196,251.20 is: 294,376.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,870.80 : 329,806.20 = 196,251.20 : x
  2. Step 2: Convert to fraction form
    219,870.80/329,806.20 = 196,251.20/x
  3. Step 3: Cross multiply
    219,870.80x = 329,806.20 × 196,251.20
  4. Step 4: Simplify right side
    219,870.80x = 64,724,862,517.44
  5. Step 5: Solve for x
    x = 64,724,862,517.44/219,870.80
  6. Step 6: Final answer
    x = 294,376.80

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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.