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Finding the Fourth Proportional to 263,095.92, 394,648.68 and 85,602.24

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Solution

The fourth proportional to 263,095.92, 394,648.68 and 85,602.24 is: 128,404.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,095.92 : 394,648.68 = 85,602.24 : x
  2. Step 2: Convert to fraction form
    263,095.92/394,648.68 = 85,602.24/x
  3. Step 3: Cross multiply
    263,095.92x = 394,648.68 × 85,602.24
  4. Step 4: Simplify right side
    263,095.92x = 33,782,811,021.04
  5. Step 5: Solve for x
    x = 33,782,811,021.04/263,095.92
  6. Step 6: Final answer
    x = 128,404.92

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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.