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Finding the Fourth Proportional to 381,075.55, 525,846.36 and 219,982.49

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Solution

The fourth proportional to 381,075.55, 525,846.36 and 219,982.49 is: 303,553.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,075.55 : 525,846.36 = 219,982.49 : x
  2. Step 2: Convert to fraction form
    381,075.55/525,846.36 = 219,982.49/x
  3. Step 3: Cross multiply
    381,075.55x = 525,846.36 × 219,982.49
  4. Step 4: Simplify right side
    381,075.55x = 115,676,994,755.75
  5. Step 5: Solve for x
    x = 115,676,994,755.75/381,075.55
  6. Step 6: Final answer
    x = 303,553.97

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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.