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Finding the Fourth Proportional to 381,072.35, 525,841.94 and 219,979.29

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Solution

The fourth proportional to 381,072.35, 525,841.94 and 219,979.29 is: 303,549.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,072.35 : 525,841.94 = 219,979.29 : x
  2. Step 2: Convert to fraction form
    381,072.35/525,841.94 = 219,979.29/x
  3. Step 3: Cross multiply
    381,072.35x = 525,841.94 × 219,979.29
  4. Step 4: Simplify right side
    381,072.35x = 115,674,337,163.37
  5. Step 5: Solve for x
    x = 115,674,337,163.37/381,072.35
  6. Step 6: Final answer
    x = 303,549.55

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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.