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Finding the Fourth Proportional to 231,961.20, 347,812.20 and 98,818.80

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Solution

The fourth proportional to 231,961.20, 347,812.20 and 98,818.80 is: 148,172.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,961.20 : 347,812.20 = 98,818.80 : x
  2. Step 2: Convert to fraction form
    231,961.20/347,812.20 = 98,818.80/x
  3. Step 3: Cross multiply
    231,961.20x = 347,812.20 × 98,818.80
  4. Step 4: Simplify right side
    231,961.20x = 34,370,384,229.36
  5. Step 5: Solve for x
    x = 34,370,384,229.36/231,961.20
  6. Step 6: Final answer
    x = 148,172.99

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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.