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Finding the Fourth Proportional to 203,020.70, 303,874.95 and 158,405.90

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Solution

The fourth proportional to 203,020.70, 303,874.95 and 158,405.90 is: 237,096.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,020.70 : 303,874.95 = 158,405.90 : x
  2. Step 2: Convert to fraction form
    203,020.70/303,874.95 = 158,405.90/x
  3. Step 3: Cross multiply
    203,020.70x = 303,874.95 × 158,405.90
  4. Step 4: Simplify right side
    203,020.70x = 48,135,584,942.21
  5. Step 5: Solve for x
    x = 48,135,584,942.21/203,020.70
  6. Step 6: Final answer
    x = 237,096.93

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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.