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Finding the Fourth Proportional to 231,855.20, 347,005.20 and 203,861.60

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Solution

The fourth proportional to 231,855.20, 347,005.20 and 203,861.60 is: 305,108.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,855.20 : 347,005.20 = 203,861.60 : x
  2. Step 2: Convert to fraction form
    231,855.20/347,005.20 = 203,861.60/x
  3. Step 3: Cross multiply
    231,855.20x = 347,005.20 × 203,861.60
  4. Step 4: Simplify right side
    231,855.20x = 70,741,035,280.32
  5. Step 5: Solve for x
    x = 70,741,035,280.32/231,855.20
  6. Step 6: Final answer
    x = 305,108.69

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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.