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Finding the Fourth Proportional to 203,485.15, 305,227.73 and 164,119.15

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Solution

The fourth proportional to 203,485.15, 305,227.73 and 164,119.15 is: 246,178.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,485.15 : 305,227.73 = 164,119.15 : x
  2. Step 2: Convert to fraction form
    203,485.15/305,227.73 = 164,119.15/x
  3. Step 3: Cross multiply
    203,485.15x = 305,227.73 × 164,119.15
  4. Step 4: Simplify right side
    203,485.15x = 50,093,715,604.03
  5. Step 5: Solve for x
    x = 50,093,715,604.03/203,485.15
  6. Step 6: Final answer
    x = 246,178.73

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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.