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Finding the Fourth Proportional to 262,959, 394,241.67 and 85,360.02

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Solution

The fourth proportional to 262,959, 394,241.67 and 85,360.02 is: 127,976.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,959 : 394,241.67 = 85,360.02 : x
  2. Step 2: Convert to fraction form
    262,959/394,241.67 = 85,360.02/x
  3. Step 3: Cross multiply
    262,959x = 394,241.67 × 85,360.02
  4. Step 4: Simplify right side
    262,959x = 33,652,476,836.03
  5. Step 5: Solve for x
    x = 33,652,476,836.03/262,959
  6. Step 6: Final answer
    x = 127,976.14

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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.