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Finding the Fourth Proportional to 271,367.09, 374,054.02 and 213,912.78

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Solution

The fourth proportional to 271,367.09, 374,054.02 and 213,912.78 is: 294,858.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,367.09 : 374,054.02 = 213,912.78 : x
  2. Step 2: Convert to fraction form
    271,367.09/374,054.02 = 213,912.78/x
  3. Step 3: Cross multiply
    271,367.09x = 374,054.02 × 213,912.78
  4. Step 4: Simplify right side
    271,367.09x = 80,014,935,288.38
  5. Step 5: Solve for x
    x = 80,014,935,288.38/271,367.09
  6. Step 6: Final answer
    x = 294,858.66

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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.