Home / 287,601.70-431,402.55-263,107.30

Finding the Fourth Proportional to 287,601.70, 431,402.55 and 263,107.30

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Solution

The fourth proportional to 287,601.70, 431,402.55 and 263,107.30 is: 394,660.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,601.70 : 431,402.55 = 263,107.30 : x
  2. Step 2: Convert to fraction form
    287,601.70/431,402.55 = 263,107.30/x
  3. Step 3: Cross multiply
    287,601.70x = 431,402.55 × 263,107.30
  4. Step 4: Simplify right side
    287,601.70x = 113,505,160,143.62
  5. Step 5: Solve for x
    x = 113,505,160,143.62/287,601.70
  6. Step 6: Final answer
    x = 394,660.95

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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.