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Finding the Fourth Proportional to 262,770.16, 394,093.80 and 85,231.60

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Solution

The fourth proportional to 262,770.16, 394,093.80 and 85,231.60 is: 127,827.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,770.16 : 394,093.80 = 85,231.60 : x
  2. Step 2: Convert to fraction form
    262,770.16/394,093.80 = 85,231.60/x
  3. Step 3: Cross multiply
    262,770.16x = 394,093.80 × 85,231.60
  4. Step 4: Simplify right side
    262,770.16x = 33,589,245,124.08
  5. Step 5: Solve for x
    x = 33,589,245,124.08/262,770.16
  6. Step 6: Final answer
    x = 127,827.47

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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.