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Finding the Fourth Proportional to 231,963.20, 347,815.20 and 98,820.80

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Solution

The fourth proportional to 231,963.20, 347,815.20 and 98,820.80 is: 148,175.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,963.20 : 347,815.20 = 98,820.80 : x
  2. Step 2: Convert to fraction form
    231,963.20/347,815.20 = 98,820.80/x
  3. Step 3: Cross multiply
    231,963.20x = 347,815.20 × 98,820.80
  4. Step 4: Simplify right side
    231,963.20x = 34,371,376,316.16
  5. Step 5: Solve for x
    x = 34,371,376,316.16/231,963.20
  6. Step 6: Final answer
    x = 148,175.99

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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.