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Finding the Fourth Proportional to 231,451.40, 347,112.30 and 73,728.20

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Solution

The fourth proportional to 231,451.40, 347,112.30 and 73,728.20 is: 110,571.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,451.40 : 347,112.30 = 73,728.20 : x
  2. Step 2: Convert to fraction form
    231,451.40/347,112.30 = 73,728.20/x
  3. Step 3: Cross multiply
    231,451.40x = 347,112.30 × 73,728.20
  4. Step 4: Simplify right side
    231,451.40x = 25,591,965,076.86
  5. Step 5: Solve for x
    x = 25,591,965,076.86/231,451.40
  6. Step 6: Final answer
    x = 110,571.66

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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.