Home / 356,821.20-492,416.82-203,879.43

Finding the Fourth Proportional to 356,821.20, 492,416.82 and 203,879.43

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Solution

The fourth proportional to 356,821.20, 492,416.82 and 203,879.43 is: 281,355.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,821.20 : 492,416.82 = 203,879.43 : x
  2. Step 2: Convert to fraction form
    356,821.20/492,416.82 = 203,879.43/x
  3. Step 3: Cross multiply
    356,821.20x = 492,416.82 × 203,879.43
  4. Step 4: Simplify right side
    356,821.20x = 100,393,660,584.01
  5. Step 5: Solve for x
    x = 100,393,660,584.01/356,821.20
  6. Step 6: Final answer
    x = 281,355.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.