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Finding the Fourth Proportional to 203,212.80, 305,015.94 and 98,105.52

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Solution

The fourth proportional to 203,212.80, 305,015.94 and 98,105.52 is: 147,253.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,212.80 : 305,015.94 = 98,105.52 : x
  2. Step 2: Convert to fraction form
    203,212.80/305,015.94 = 98,105.52/x
  3. Step 3: Cross multiply
    203,212.80x = 305,015.94 × 98,105.52
  4. Step 4: Simplify right side
    203,212.80x = 29,923,747,401.99
  5. Step 5: Solve for x
    x = 29,923,747,401.99/203,212.80
  6. Step 6: Final answer
    x = 147,253.26

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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.