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Finding the Fourth Proportional to 303,391.66, 418,524.14 and 188,626.78

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Solution

The fourth proportional to 303,391.66, 418,524.14 and 188,626.78 is: 260,207.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,391.66 : 418,524.14 = 188,626.78 : x
  2. Step 2: Convert to fraction form
    303,391.66/418,524.14 = 188,626.78/x
  3. Step 3: Cross multiply
    303,391.66x = 418,524.14 × 188,626.78
  4. Step 4: Simplify right side
    303,391.66x = 78,944,860,880.47
  5. Step 5: Solve for x
    x = 78,944,860,880.47/303,391.66
  6. Step 6: Final answer
    x = 260,207.75

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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.