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Finding the Fourth Proportional to 263,296.80, 394,945.20 and 210,808.80

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Solution

The fourth proportional to 263,296.80, 394,945.20 and 210,808.80 is: 316,213.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,296.80 : 394,945.20 = 210,808.80 : x
  2. Step 2: Convert to fraction form
    263,296.80/394,945.20 = 210,808.80/x
  3. Step 3: Cross multiply
    263,296.80x = 394,945.20 × 210,808.80
  4. Step 4: Simplify right side
    263,296.80x = 83,257,923,677.76
  5. Step 5: Solve for x
    x = 83,257,923,677.76/263,296.80
  6. Step 6: Final answer
    x = 316,213.20

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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.