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Finding the Fourth Proportional to 231,007.52, 346,540.44 and 81,212.60

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Solution

The fourth proportional to 231,007.52, 346,540.44 and 81,212.60 is: 121,829.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,007.52 : 346,540.44 = 81,212.60 : x
  2. Step 2: Convert to fraction form
    231,007.52/346,540.44 = 81,212.60/x
  3. Step 3: Cross multiply
    231,007.52x = 346,540.44 × 81,212.60
  4. Step 4: Simplify right side
    231,007.52x = 28,143,450,137.54
  5. Step 5: Solve for x
    x = 28,143,450,137.54/231,007.52
  6. Step 6: Final answer
    x = 121,829.15

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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.