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Finding the Fourth Proportional to 381,999.80, 573,611.70 and 303,764.60

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Solution

The fourth proportional to 381,999.80, 573,611.70 and 303,764.60 is: 456,133.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,999.80 : 573,611.70 = 303,764.60 : x
  2. Step 2: Convert to fraction form
    381,999.80/573,611.70 = 303,764.60/x
  3. Step 3: Cross multiply
    381,999.80x = 573,611.70 × 303,764.60
  4. Step 4: Simplify right side
    381,999.80x = 174,242,928,605.82
  5. Step 5: Solve for x
    x = 174,242,928,605.82/381,999.80
  6. Step 6: Final answer
    x = 456,133.56

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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.