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Finding the Fourth Proportional to 231,693.78, 319,728.69 and 131,093.94

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Solution

The fourth proportional to 231,693.78, 319,728.69 and 131,093.94 is: 180,904.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,693.78 : 319,728.69 = 131,093.94 : x
  2. Step 2: Convert to fraction form
    231,693.78/319,728.69 = 131,093.94/x
  3. Step 3: Cross multiply
    231,693.78x = 319,728.69 × 131,093.94
  4. Step 4: Simplify right side
    231,693.78x = 41,914,493,703.14
  5. Step 5: Solve for x
    x = 41,914,493,703.14/231,693.78
  6. Step 6: Final answer
    x = 180,904.70

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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.