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Finding the Fourth Proportional to 203,912.44, 305,933.66 and 85,552.00

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Solution

The fourth proportional to 203,912.44, 305,933.66 and 85,552.00 is: 128,355.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,912.44 : 305,933.66 = 85,552.00 : x
  2. Step 2: Convert to fraction form
    203,912.44/305,933.66 = 85,552.00/x
  3. Step 3: Cross multiply
    203,912.44x = 305,933.66 × 85,552.00
  4. Step 4: Simplify right side
    203,912.44x = 26,173,235,608.55
  5. Step 5: Solve for x
    x = 26,173,235,608.55/203,912.44
  6. Step 6: Final answer
    x = 128,355.27

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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.