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Finding the Fourth Proportional to 203,496.72, 305,248.50 and 70,380.42

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Solution

The fourth proportional to 203,496.72, 305,248.50 and 70,380.42 is: 105,571.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,496.72 : 305,248.50 = 70,380.42 : x
  2. Step 2: Convert to fraction form
    203,496.72/305,248.50 = 70,380.42/x
  3. Step 3: Cross multiply
    203,496.72x = 305,248.50 × 70,380.42
  4. Step 4: Simplify right side
    203,496.72x = 21,483,517,634.37
  5. Step 5: Solve for x
    x = 21,483,517,634.37/203,496.72
  6. Step 6: Final answer
    x = 105,571.81

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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.