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Finding the Fourth Proportional to 262,725.72, 394,143.96 and 85,218.92

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Solution

The fourth proportional to 262,725.72, 394,143.96 and 85,218.92 is: 127,846.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,725.72 : 394,143.96 = 85,218.92 : x
  2. Step 2: Convert to fraction form
    262,725.72/394,143.96 = 85,218.92/x
  3. Step 3: Cross multiply
    262,725.72x = 394,143.96 × 85,218.92
  4. Step 4: Simplify right side
    262,725.72x = 33,588,522,595.72
  5. Step 5: Solve for x
    x = 33,588,522,595.72/262,725.72
  6. Step 6: Final answer
    x = 127,846.34

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1.5x scale

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.