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Finding the Fourth Proportional to 442,367.20, 663,554.49 and 274,376.44

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Solution

The fourth proportional to 442,367.20, 663,554.49 and 274,376.44 is: 411,566.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,367.20 : 663,554.49 = 274,376.44 : x
  2. Step 2: Convert to fraction form
    442,367.20/663,554.49 = 274,376.44/x
  3. Step 3: Cross multiply
    442,367.20x = 663,554.49 × 274,376.44
  4. Step 4: Simplify right side
    442,367.20x = 182,063,718,712.22
  5. Step 5: Solve for x
    x = 182,063,718,712.22/442,367.20
  6. Step 6: Final answer
    x = 411,566.95

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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.