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Finding the Fourth Proportional to 337,640.40, 505,780.20 and 210,891.60

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Solution

The fourth proportional to 337,640.40, 505,780.20 and 210,891.60 is: 315,912.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    337,640.40 : 505,780.20 = 210,891.60 : x
  2. Step 2: Convert to fraction form
    337,640.40/505,780.20 = 210,891.60/x
  3. Step 3: Cross multiply
    337,640.40x = 505,780.20 × 210,891.60
  4. Step 4: Simplify right side
    337,640.40x = 106,664,795,626.32
  5. Step 5: Solve for x
    x = 106,664,795,626.32/337,640.40
  6. Step 6: Final answer
    x = 315,912.42

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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.