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Finding the Fourth Proportional to 263,243.43, 394,864.84 and 85,750.16

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Solution

The fourth proportional to 263,243.43, 394,864.84 and 85,750.16 is: 128,625.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,243.43 : 394,864.84 = 85,750.16 : x
  2. Step 2: Convert to fraction form
    263,243.43/394,864.84 = 85,750.16/x
  3. Step 3: Cross multiply
    263,243.43x = 394,864.84 × 85,750.16
  4. Step 4: Simplify right side
    263,243.43x = 33,859,721,341.24
  5. Step 5: Solve for x
    x = 33,859,721,341.24/263,243.43
  6. Step 6: Final answer
    x = 128,625.13

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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.