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Finding the Fourth Proportional to 203,710.26, 305,865.35 and 113,928.88

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Solution

The fourth proportional to 203,710.26, 305,865.35 and 113,928.88 is: 171,061.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,710.26 : 305,865.35 = 113,928.88 : x
  2. Step 2: Convert to fraction form
    203,710.26/305,865.35 = 113,928.88/x
  3. Step 3: Cross multiply
    203,710.26x = 305,865.35 × 113,928.88
  4. Step 4: Simplify right side
    203,710.26x = 34,846,895,849.23
  5. Step 5: Solve for x
    x = 34,846,895,849.23/203,710.26
  6. Step 6: Final answer
    x = 171,061.07

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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.