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Finding the Fourth Proportional to 235,381.80, 352,961.46 and 85,517.58

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Solution

The fourth proportional to 235,381.80, 352,961.46 and 85,517.58 is: 128,235.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,381.80 : 352,961.46 = 85,517.58 : x
  2. Step 2: Convert to fraction form
    235,381.80/352,961.46 = 85,517.58/x
  3. Step 3: Cross multiply
    235,381.80x = 352,961.46 × 85,517.58
  4. Step 4: Simplify right side
    235,381.80x = 30,184,409,892.47
  5. Step 5: Solve for x
    x = 30,184,409,892.47/235,381.80
  6. Step 6: Final answer
    x = 128,235.95

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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.