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Finding the Fourth Proportional to 231,697.20, 347,740.20 and 113,469.60

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Solution

The fourth proportional to 231,697.20, 347,740.20 and 113,469.60 is: 170,299.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,697.20 : 347,740.20 = 113,469.60 : x
  2. Step 2: Convert to fraction form
    231,697.20/347,740.20 = 113,469.60/x
  3. Step 3: Cross multiply
    231,697.20x = 347,740.20 × 113,469.60
  4. Step 4: Simplify right side
    231,697.20x = 39,457,941,397.92
  5. Step 5: Solve for x
    x = 39,457,941,397.92/231,697.20
  6. Step 6: Final answer
    x = 170,299.60

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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.