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Finding the Fourth Proportional to 439,355.91, 658,796.79 and 199,338.82

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Solution

The fourth proportional to 439,355.91, 658,796.79 and 199,338.82 is: 298,900.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,355.91 : 658,796.79 = 199,338.82 : x
  2. Step 2: Convert to fraction form
    439,355.91/658,796.79 = 199,338.82/x
  3. Step 3: Cross multiply
    439,355.91x = 658,796.79 × 199,338.82
  4. Step 4: Simplify right side
    439,355.91x = 131,323,777,544.65
  5. Step 5: Solve for x
    x = 131,323,777,544.65/439,355.91
  6. Step 6: Final answer
    x = 298,900.67

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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.