Home / 231,816.40-347,638.20-81,998.80

Finding the Fourth Proportional to 231,816.40, 347,638.20 and 81,998.80

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Solution

The fourth proportional to 231,816.40, 347,638.20 and 81,998.80 is: 122,967.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,816.40 : 347,638.20 = 81,998.80 : x
  2. Step 2: Convert to fraction form
    231,816.40/347,638.20 = 81,998.80/x
  3. Step 3: Cross multiply
    231,816.40x = 347,638.20 × 81,998.80
  4. Step 4: Simplify right side
    231,816.40x = 28,505,915,234.16
  5. Step 5: Solve for x
    x = 28,505,915,234.16/231,816.40
  6. Step 6: Final answer
    x = 122,967.64

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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.