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Finding the Fourth Proportional to 381,105.73, 525,969.21 and 220,004.02

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Solution

The fourth proportional to 381,105.73, 525,969.21 and 220,004.02 is: 303,630.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,105.73 : 525,969.21 = 220,004.02 : x
  2. Step 2: Convert to fraction form
    381,105.73/525,969.21 = 220,004.02/x
  3. Step 3: Cross multiply
    381,105.73x = 525,969.21 × 220,004.02
  4. Step 4: Simplify right side
    381,105.73x = 115,715,340,596.22
  5. Step 5: Solve for x
    x = 115,715,340,596.22/381,105.73
  6. Step 6: Final answer
    x = 303,630.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.