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Finding the Fourth Proportional to 231,655.20, 347,223.60 and 98,512.80

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Solution

The fourth proportional to 231,655.20, 347,223.60 and 98,512.80 is: 147,658.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,655.20 : 347,223.60 = 98,512.80 : x
  2. Step 2: Convert to fraction form
    231,655.20/347,223.60 = 98,512.80/x
  3. Step 3: Cross multiply
    231,655.20x = 347,223.60 × 98,512.80
  4. Step 4: Simplify right side
    231,655.20x = 34,205,969,062.08
  5. Step 5: Solve for x
    x = 34,205,969,062.08/231,655.20
  6. Step 6: Final answer
    x = 147,658.97

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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.