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Finding the Fourth Proportional to 262,742.51, 394,113.58 and 85,249.52

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Solution

The fourth proportional to 262,742.51, 394,113.58 and 85,249.52 is: 127,874.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,742.51 : 394,113.58 = 85,249.52 : x
  2. Step 2: Convert to fraction form
    262,742.51/394,113.58 = 85,249.52/x
  3. Step 3: Cross multiply
    262,742.51x = 394,113.58 × 85,249.52
  4. Step 4: Simplify right side
    262,742.51x = 33,597,993,520.48
  5. Step 5: Solve for x
    x = 33,597,993,520.48/262,742.51
  6. Step 6: Final answer
    x = 127,874.22

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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.