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Finding the Fourth Proportional to 235,278, 352,760.96 and 85,500.50

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Solution

The fourth proportional to 235,278, 352,760.96 and 85,500.50 is: 128,194.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,278 : 352,760.96 = 85,500.50 : x
  2. Step 2: Convert to fraction form
    235,278/352,760.96 = 85,500.50/x
  3. Step 3: Cross multiply
    235,278x = 352,760.96 × 85,500.50
  4. Step 4: Simplify right side
    235,278x = 30,161,236,910.43
  5. Step 5: Solve for x
    x = 30,161,236,910.43/235,278
  6. Step 6: Final answer
    x = 128,194.04

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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.