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Finding the Fourth Proportional to 253,843.78, 350,306.49 and 140,668.42

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Solution

The fourth proportional to 253,843.78, 350,306.49 and 140,668.42 is: 194,123.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,843.78 : 350,306.49 = 140,668.42 : x
  2. Step 2: Convert to fraction form
    253,843.78/350,306.49 = 140,668.42/x
  3. Step 3: Cross multiply
    253,843.78x = 350,306.49 × 140,668.42
  4. Step 4: Simplify right side
    253,843.78x = 49,277,060,464.05
  5. Step 5: Solve for x
    x = 49,277,060,464.05/253,843.78
  6. Step 6: Final answer
    x = 194,123.57

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1.5x scale

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.