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Finding the Fourth Proportional to 253,949.89, 350,448.49 and 139,234.91

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Solution

The fourth proportional to 253,949.89, 350,448.49 and 139,234.91 is: 192,142.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,949.89 : 350,448.49 = 139,234.91 : x
  2. Step 2: Convert to fraction form
    253,949.89/350,448.49 = 139,234.91/x
  3. Step 3: Cross multiply
    253,949.89x = 350,448.49 × 139,234.91
  4. Step 4: Simplify right side
    253,949.89x = 48,794,663,964.79
  5. Step 5: Solve for x
    x = 48,794,663,964.79/253,949.89
  6. Step 6: Final answer
    x = 192,142.88

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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.