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Finding the Fourth Proportional to 362,479.20, 543,791.70 and 303,721.80

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Solution

The fourth proportional to 362,479.20, 543,791.70 and 303,721.80 is: 455,643.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    362,479.20 : 543,791.70 = 303,721.80 : x
  2. Step 2: Convert to fraction form
    362,479.20/543,791.70 = 303,721.80/x
  3. Step 3: Cross multiply
    362,479.20x = 543,791.70 × 303,721.80
  4. Step 4: Simplify right side
    362,479.20x = 165,161,393,949.06
  5. Step 5: Solve for x
    x = 165,161,393,949.06/362,479.20
  6. Step 6: Final answer
    x = 455,643.78

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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.