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Finding the Fourth Proportional to 442,889.11, 663,334.87 and 205,732.72

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Solution

The fourth proportional to 442,889.11, 663,334.87 and 205,732.72 is: 308,135.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,889.11 : 663,334.87 = 205,732.72 : x
  2. Step 2: Convert to fraction form
    442,889.11/663,334.87 = 205,732.72/x
  3. Step 3: Cross multiply
    442,889.11x = 663,334.87 × 205,732.72
  4. Step 4: Simplify right side
    442,889.11x = 136,469,687,075.95
  5. Step 5: Solve for x
    x = 136,469,687,075.95/442,889.11
  6. Step 6: Final answer
    x = 308,135.12

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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.