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Finding the Fourth Proportional to 441,405.70, 662,108.55 and 329,431.30

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Solution

The fourth proportional to 441,405.70, 662,108.55 and 329,431.30 is: 494,146.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    441,405.70 : 662,108.55 = 329,431.30 : x
  2. Step 2: Convert to fraction form
    441,405.70/662,108.55 = 329,431.30/x
  3. Step 3: Cross multiply
    441,405.70x = 662,108.55 × 329,431.30
  4. Step 4: Simplify right side
    441,405.70x = 218,119,280,367.62
  5. Step 5: Solve for x
    x = 218,119,280,367.62/441,405.70
  6. Step 6: Final answer
    x = 494,146.95

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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.