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Finding the Fourth Proportional to 262,866.79, 394,639.17 and 225,665.92

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Solution

The fourth proportional to 262,866.79, 394,639.17 and 225,665.92 is: 338,789.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,866.79 : 394,639.17 = 225,665.92 : x
  2. Step 2: Convert to fraction form
    262,866.79/394,639.17 = 225,665.92/x
  3. Step 3: Cross multiply
    262,866.79x = 394,639.17 × 225,665.92
  4. Step 4: Simplify right side
    262,866.79x = 89,056,611,366.09
  5. Step 5: Solve for x
    x = 89,056,611,366.09/262,866.79
  6. Step 6: Final answer
    x = 338,789.89

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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.