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Finding the Fourth Proportional to 263,208.80, 394,910.40 and 253,488.80

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Solution

The fourth proportional to 263,208.80, 394,910.40 and 253,488.80 is: 380,326.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,208.80 : 394,910.40 = 253,488.80 : x
  2. Step 2: Convert to fraction form
    263,208.80/394,910.40 = 253,488.80/x
  3. Step 3: Cross multiply
    263,208.80x = 394,910.40 × 253,488.80
  4. Step 4: Simplify right side
    263,208.80x = 100,105,363,403.52
  5. Step 5: Solve for x
    x = 100,105,363,403.52/263,208.80
  6. Step 6: Final answer
    x = 380,326.81

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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.