Home / 812,182.20-1,218,273.30-221,206.20

Finding the Fourth Proportional to 812,182.20, 1,218,273.30 and 221,206.20

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Solution

The fourth proportional to 812,182.20, 1,218,273.30 and 221,206.20 is: 331,809.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,182.20 : 1,218,273.30 = 221,206.20 : x
  2. Step 2: Convert to fraction form
    812,182.20/1,218,273.30 = 221,206.20/x
  3. Step 3: Cross multiply
    812,182.20x = 1,218,273.30 × 221,206.20
  4. Step 4: Simplify right side
    812,182.20x = 269,489,607,254.46
  5. Step 5: Solve for x
    x = 269,489,607,254.46/812,182.20
  6. Step 6: Final answer
    x = 331,809.30

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Double scale
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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.