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Finding the Fourth Proportional to 231,490.62, 347,249.49 and 89,336.64

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Solution

The fourth proportional to 231,490.62, 347,249.49 and 89,336.64 is: 134,010.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,490.62 : 347,249.49 = 89,336.64 : x
  2. Step 2: Convert to fraction form
    231,490.62/347,249.49 = 89,336.64/x
  3. Step 3: Cross multiply
    231,490.62x = 347,249.49 × 89,336.64
  4. Step 4: Simplify right side
    231,490.62x = 31,022,102,678.31
  5. Step 5: Solve for x
    x = 31,022,102,678.31/231,490.62
  6. Step 6: Final answer
    x = 134,010.19

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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.