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Finding the Fourth Proportional to 381,072.55, 525,842.22 and 219,979.50

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Solution

The fourth proportional to 381,072.55, 525,842.22 and 219,979.50 is: 303,549.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,072.55 : 525,842.22 = 219,979.50 : x
  2. Step 2: Convert to fraction form
    381,072.55/525,842.22 = 219,979.50/x
  3. Step 3: Cross multiply
    381,072.55x = 525,842.22 × 219,979.50
  4. Step 4: Simplify right side
    381,072.55x = 115,674,508,634.49
  5. Step 5: Solve for x
    x = 115,674,508,634.49/381,072.55
  6. Step 6: Final answer
    x = 303,549.83

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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.