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Finding the Fourth Proportional to 263,288.96, 394,957.44 and 85,750.40

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Solution

The fourth proportional to 263,288.96, 394,957.44 and 85,750.40 is: 128,633.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,288.96 : 394,957.44 = 85,750.40 : x
  2. Step 2: Convert to fraction form
    263,288.96/394,957.44 = 85,750.40/x
  3. Step 3: Cross multiply
    263,288.96x = 394,957.44 × 85,750.40
  4. Step 4: Simplify right side
    263,288.96x = 33,867,758,462.98
  5. Step 5: Solve for x
    x = 33,867,758,462.98/263,288.96
  6. Step 6: Final answer
    x = 128,633.42

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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.