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Finding the Fourth Proportional to 366,286.88, 505,554 and 215,469.92

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Solution

The fourth proportional to 366,286.88, 505,554 and 215,469.92 is: 297,394.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,286.88 : 505,554 = 215,469.92 : x
  2. Step 2: Convert to fraction form
    366,286.88/505,554 = 215,469.92/x
  3. Step 3: Cross multiply
    366,286.88x = 505,554 × 215,469.92
  4. Step 4: Simplify right side
    366,286.88x = 108,931,679,935.68
  5. Step 5: Solve for x
    x = 108,931,679,935.68/366,286.88
  6. Step 6: Final answer
    x = 297,394.44

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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.