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Finding the Fourth Proportional to 203,886.10, 305,829.15 and 133,027.30

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Solution

The fourth proportional to 203,886.10, 305,829.15 and 133,027.30 is: 199,540.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,886.10 : 305,829.15 = 133,027.30 : x
  2. Step 2: Convert to fraction form
    203,886.10/305,829.15 = 133,027.30/x
  3. Step 3: Cross multiply
    203,886.10x = 305,829.15 × 133,027.30
  4. Step 4: Simplify right side
    203,886.10x = 40,683,626,085.80
  5. Step 5: Solve for x
    x = 40,683,626,085.80/203,886.10
  6. Step 6: Final answer
    x = 199,540.95

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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.