Home / 812,043.20-1,218,064.80-221,067.20

Finding the Fourth Proportional to 812,043.20, 1,218,064.80 and 221,067.20

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Solution

The fourth proportional to 812,043.20, 1,218,064.80 and 221,067.20 is: 331,600.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,043.20 : 1,218,064.80 = 221,067.20 : x
  2. Step 2: Convert to fraction form
    812,043.20/1,218,064.80 = 221,067.20/x
  3. Step 3: Cross multiply
    812,043.20x = 1,218,064.80 × 221,067.20
  4. Step 4: Simplify right side
    812,043.20x = 269,274,174,754.56
  5. Step 5: Solve for x
    x = 269,274,174,754.56/812,043.20
  6. Step 6: Final answer
    x = 331,600.80

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Similar ratio
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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.