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Finding the Fourth Proportional to 263,207.80, 394,908.90 and 253,487.80

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Solution

The fourth proportional to 263,207.80, 394,908.90 and 253,487.80 is: 380,325.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,207.80 : 394,908.90 = 253,487.80 : x
  2. Step 2: Convert to fraction form
    263,207.80/394,908.90 = 253,487.80/x
  3. Step 3: Cross multiply
    263,207.80x = 394,908.90 × 253,487.80
  4. Step 4: Simplify right side
    263,207.80x = 100,104,588,261.42
  5. Step 5: Solve for x
    x = 100,104,588,261.42/263,207.80
  6. Step 6: Final answer
    x = 380,325.31

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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.