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Finding the Fourth Proportional to 381,919.80, 573,491.70 and 303,684.60

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Solution

The fourth proportional to 381,919.80, 573,491.70 and 303,684.60 is: 456,013.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,919.80 : 573,491.70 = 303,684.60 : x
  2. Step 2: Convert to fraction form
    381,919.80/573,491.70 = 303,684.60/x
  3. Step 3: Cross multiply
    381,919.80x = 573,491.70 × 303,684.60
  4. Step 4: Simplify right side
    381,919.80x = 174,160,597,517.82
  5. Step 5: Solve for x
    x = 174,160,597,517.82/381,919.80
  6. Step 6: Final answer
    x = 456,013.53

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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.