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Finding the Fourth Proportional to 362,489.20, 543,806.70 and 303,731.80

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Solution

The fourth proportional to 362,489.20, 543,806.70 and 303,731.80 is: 455,658.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    362,489.20 : 543,806.70 = 303,731.80 : x
  2. Step 2: Convert to fraction form
    362,489.20/543,806.70 = 303,731.80/x
  3. Step 3: Cross multiply
    362,489.20x = 543,806.70 × 303,731.80
  4. Step 4: Simplify right side
    362,489.20x = 165,171,387,843.06
  5. Step 5: Solve for x
    x = 165,171,387,843.06/362,489.20
  6. Step 6: Final answer
    x = 455,658.78

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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.