Home / 263,127.60-394,695-85,635.36

Finding the Fourth Proportional to 263,127.60, 394,695 and 85,635.36

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Solution

The fourth proportional to 263,127.60, 394,695 and 85,635.36 is: 128,454.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,127.60 : 394,695 = 85,635.36 : x
  2. Step 2: Convert to fraction form
    263,127.60/394,695 = 85,635.36/x
  3. Step 3: Cross multiply
    263,127.60x = 394,695 × 85,635.36
  4. Step 4: Simplify right side
    263,127.60x = 33,799,848,415.20
  5. Step 5: Solve for x
    x = 33,799,848,415.20/263,127.60
  6. Step 6: Final answer
    x = 128,454.21

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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.