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Finding the Fourth Proportional to 489,272.20, 733,908.30 and 329,839.90

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Solution

The fourth proportional to 489,272.20, 733,908.30 and 329,839.90 is: 494,759.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,272.20 : 733,908.30 = 329,839.90 : x
  2. Step 2: Convert to fraction form
    489,272.20/733,908.30 = 329,839.90/x
  3. Step 3: Cross multiply
    489,272.20x = 733,908.30 × 329,839.90
  4. Step 4: Simplify right side
    489,272.20x = 242,072,240,281.17
  5. Step 5: Solve for x
    x = 242,072,240,281.17/489,272.20
  6. Step 6: Final answer
    x = 494,759.85

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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.