Home / 547,234.40-820,414.20-231,431.60

Finding the Fourth Proportional to 547,234.40, 820,414.20 and 231,431.60

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Solution

The fourth proportional to 547,234.40, 820,414.20 and 231,431.60 is: 346,962.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,234.40 : 820,414.20 = 231,431.60 : x
  2. Step 2: Convert to fraction form
    547,234.40/820,414.20 = 231,431.60/x
  3. Step 3: Cross multiply
    547,234.40x = 820,414.20 × 231,431.60
  4. Step 4: Simplify right side
    547,234.40x = 189,869,770,968.72
  5. Step 5: Solve for x
    x = 189,869,770,968.72/547,234.40
  6. Step 6: Final answer
    x = 346,962.42

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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.