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Finding the Fourth Proportional to 371,186.31, 512,469.27 and 255,099.75

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Solution

The fourth proportional to 371,186.31, 512,469.27 and 255,099.75 is: 352,197.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,186.31 : 512,469.27 = 255,099.75 : x
  2. Step 2: Convert to fraction form
    371,186.31/512,469.27 = 255,099.75/x
  3. Step 3: Cross multiply
    371,186.31x = 512,469.27 × 255,099.75
  4. Step 4: Simplify right side
    371,186.31x = 130,730,782,659.68
  5. Step 5: Solve for x
    x = 130,730,782,659.68/371,186.31
  6. Step 6: Final answer
    x = 352,197.21

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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.