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Finding the Fourth Proportional to 400,276.89, 600,488.10 and 189,912.87

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Solution

The fourth proportional to 400,276.89, 600,488.10 and 189,912.87 is: 284,903.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,276.89 : 600,488.10 = 189,912.87 : x
  2. Step 2: Convert to fraction form
    400,276.89/600,488.10 = 189,912.87/x
  3. Step 3: Cross multiply
    400,276.89x = 600,488.10 × 189,912.87
  4. Step 4: Simplify right side
    400,276.89x = 114,040,418,471.85
  5. Step 5: Solve for x
    x = 114,040,418,471.85/400,276.89
  6. Step 6: Final answer
    x = 284,903.83

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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.