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Finding the Fourth Proportional to 261,719.26, 361,163.46 and 159,915.11

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Solution

The fourth proportional to 261,719.26, 361,163.46 and 159,915.11 is: 220,677.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,719.26 : 361,163.46 = 159,915.11 : x
  2. Step 2: Convert to fraction form
    261,719.26/361,163.46 = 159,915.11/x
  3. Step 3: Cross multiply
    261,719.26x = 361,163.46 × 159,915.11
  4. Step 4: Simplify right side
    261,719.26x = 57,755,495,336.79
  5. Step 5: Solve for x
    x = 57,755,495,336.79/261,719.26
  6. Step 6: Final answer
    x = 220,677.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.