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Finding the Fourth Proportional to 362,487.20, 543,803.70 and 303,729.80

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Solution

The fourth proportional to 362,487.20, 543,803.70 and 303,729.80 is: 455,655.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    362,487.20 : 543,803.70 = 303,729.80 : x
  2. Step 2: Convert to fraction form
    362,487.20/543,803.70 = 303,729.80/x
  3. Step 3: Cross multiply
    362,487.20x = 543,803.70 × 303,729.80
  4. Step 4: Simplify right side
    362,487.20x = 165,169,389,040.26
  5. Step 5: Solve for x
    x = 165,169,389,040.26/362,487.20
  6. Step 6: Final answer
    x = 455,655.78

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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.