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Finding the Fourth Proportional to 262,690.56, 394,195.14 and 104,905.80

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Solution

The fourth proportional to 262,690.56, 394,195.14 and 104,905.80 is: 157,422.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,690.56 : 394,195.14 = 104,905.80 : x
  2. Step 2: Convert to fraction form
    262,690.56/394,195.14 = 104,905.80/x
  3. Step 3: Cross multiply
    262,690.56x = 394,195.14 × 104,905.80
  4. Step 4: Simplify right side
    262,690.56x = 41,353,356,517.81
  5. Step 5: Solve for x
    x = 41,353,356,517.81/262,690.56
  6. Step 6: Final answer
    x = 157,422.32

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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.