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Finding the Fourth Proportional to 254,213.91, 350,803.31 and 139,489.97

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Solution

The fourth proportional to 254,213.91, 350,803.31 and 139,489.97 is: 192,489.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,213.91 : 350,803.31 = 139,489.97 : x
  2. Step 2: Convert to fraction form
    254,213.91/350,803.31 = 139,489.97/x
  3. Step 3: Cross multiply
    254,213.91x = 350,803.31 × 139,489.97
  4. Step 4: Simplify right side
    254,213.91x = 48,933,540,736.33
  5. Step 5: Solve for x
    x = 48,933,540,736.33/254,213.91
  6. Step 6: Final answer
    x = 192,489.63

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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.