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Finding the Fourth Proportional to 231,490.87, 347,249.87 and 89,336.89

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Solution

The fourth proportional to 231,490.87, 347,249.87 and 89,336.89 is: 134,010.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,490.87 : 347,249.87 = 89,336.89 : x
  2. Step 2: Convert to fraction form
    231,490.87/347,249.87 = 89,336.89/x
  3. Step 3: Cross multiply
    231,490.87x = 347,249.87 × 89,336.89
  4. Step 4: Simplify right side
    231,490.87x = 31,022,222,992.02
  5. Step 5: Solve for x
    x = 31,022,222,992.02/231,490.87
  6. Step 6: Final answer
    x = 134,010.57

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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.