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Finding the Fourth Proportional to 262,740.42, 394,168.14 and 85,265.28

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Solution

The fourth proportional to 262,740.42, 394,168.14 and 85,265.28 is: 127,916.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,740.42 : 394,168.14 = 85,265.28 : x
  2. Step 2: Convert to fraction form
    262,740.42/394,168.14 = 85,265.28/x
  3. Step 3: Cross multiply
    262,740.42x = 394,168.14 × 85,265.28
  4. Step 4: Simplify right side
    262,740.42x = 33,608,856,824.18
  5. Step 5: Solve for x
    x = 33,608,856,824.18/262,740.42
  6. Step 6: Final answer
    x = 127,916.58

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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.