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Finding the Fourth Proportional to 395,370.38, 545,611.41 and 214,082.43

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Solution

The fourth proportional to 395,370.38, 545,611.41 and 214,082.43 is: 295,433.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,370.38 : 545,611.41 = 214,082.43 : x
  2. Step 2: Convert to fraction form
    395,370.38/545,611.41 = 214,082.43/x
  3. Step 3: Cross multiply
    395,370.38x = 545,611.41 × 214,082.43
  4. Step 4: Simplify right side
    395,370.38x = 116,805,816,488.53
  5. Step 5: Solve for x
    x = 116,805,816,488.53/395,370.38
  6. Step 6: Final answer
    x = 295,433.91

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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.