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Finding the Fourth Proportional to 239,813.88, 330,635.70 and 196,634.40

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Solution

The fourth proportional to 239,813.88, 330,635.70 and 196,634.40 is: 271,103.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,813.88 : 330,635.70 = 196,634.40 : x
  2. Step 2: Convert to fraction form
    239,813.88/330,635.70 = 196,634.40/x
  3. Step 3: Cross multiply
    239,813.88x = 330,635.70 × 196,634.40
  4. Step 4: Simplify right side
    239,813.88x = 65,014,352,488.08
  5. Step 5: Solve for x
    x = 65,014,352,488.08/239,813.88
  6. Step 6: Final answer
    x = 271,103.38

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.