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Finding the Fourth Proportional to 231,398.37, 347,062.49 and 79,618.53

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Solution

The fourth proportional to 231,398.37, 347,062.49 and 79,618.53 is: 119,415.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,398.37 : 347,062.49 = 79,618.53 : x
  2. Step 2: Convert to fraction form
    231,398.37/347,062.49 = 79,618.53/x
  3. Step 3: Cross multiply
    231,398.37x = 347,062.49 × 79,618.53
  4. Step 4: Simplify right side
    231,398.37x = 27,632,604,873.85
  5. Step 5: Solve for x
    x = 27,632,604,873.85/231,398.37
  6. Step 6: Final answer
    x = 119,415.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.