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Finding the Fourth Proportional to 231,662.20, 347,234.10 and 131,870.20

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Solution

The fourth proportional to 231,662.20, 347,234.10 and 131,870.20 is: 197,657.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,662.20 : 347,234.10 = 131,870.20 : x
  2. Step 2: Convert to fraction form
    231,662.20/347,234.10 = 131,870.20/x
  3. Step 3: Cross multiply
    231,662.20x = 347,234.10 × 131,870.20
  4. Step 4: Simplify right side
    231,662.20x = 45,789,830,213.82
  5. Step 5: Solve for x
    x = 45,789,830,213.82/231,662.20
  6. Step 6: Final answer
    x = 197,657.75

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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.