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Finding the Fourth Proportional to 303,890.44, 419,379.14 and 190,775.56

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Solution

The fourth proportional to 303,890.44, 419,379.14 and 190,775.56 is: 263,276.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,890.44 : 419,379.14 = 190,775.56 : x
  2. Step 2: Convert to fraction form
    303,890.44/419,379.14 = 190,775.56/x
  3. Step 3: Cross multiply
    303,890.44x = 419,379.14 × 190,775.56
  4. Step 4: Simplify right side
    303,890.44x = 80,007,290,285.82
  5. Step 5: Solve for x
    x = 80,007,290,285.82/303,890.44
  6. Step 6: Final answer
    x = 263,276.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.