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Finding the Fourth Proportional to 303,352.81, 418,778.44 and 188,668.42

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Solution

The fourth proportional to 303,352.81, 418,778.44 and 188,668.42 is: 260,456.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,352.81 : 418,778.44 = 188,668.42 : x
  2. Step 2: Convert to fraction form
    303,352.81/418,778.44 = 188,668.42/x
  3. Step 3: Cross multiply
    303,352.81x = 418,778.44 × 188,668.42
  4. Step 4: Simplify right side
    303,352.81x = 79,010,267,180.14
  5. Step 5: Solve for x
    x = 79,010,267,180.14/303,352.81
  6. Step 6: Final answer
    x = 260,456.68

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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.