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Finding the Fourth Proportional to 231,647.20, 347,211.60 and 131,855.20

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Solution

The fourth proportional to 231,647.20, 347,211.60 and 131,855.20 is: 197,635.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,647.20 : 347,211.60 = 131,855.20 : x
  2. Step 2: Convert to fraction form
    231,647.20/347,211.60 = 131,855.20/x
  3. Step 3: Cross multiply
    231,647.20x = 347,211.60 × 131,855.20
  4. Step 4: Simplify right side
    231,647.20x = 45,781,654,960.32
  5. Step 5: Solve for x
    x = 45,781,654,960.32/231,647.20
  6. Step 6: Final answer
    x = 197,635.26

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1.5x scale

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.