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Finding the Fourth Proportional to 263,276.80, 393,763.20 and 235,398.40

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Solution

The fourth proportional to 263,276.80, 393,763.20 and 235,398.40 is: 352,067.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,276.80 : 393,763.20 = 235,398.40 : x
  2. Step 2: Convert to fraction form
    263,276.80/393,763.20 = 235,398.40/x
  3. Step 3: Cross multiply
    263,276.80x = 393,763.20 × 235,398.40
  4. Step 4: Simplify right side
    263,276.80x = 92,691,227,258.88
  5. Step 5: Solve for x
    x = 92,691,227,258.88/263,276.80
  6. Step 6: Final answer
    x = 352,067.59

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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.