Home / 812,359.20-1,218,615.60-221,383.20

Finding the Fourth Proportional to 812,359.20, 1,218,615.60 and 221,383.20

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Solution

The fourth proportional to 812,359.20, 1,218,615.60 and 221,383.20 is: 332,095.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,359.20 : 1,218,615.60 = 221,383.20 : x
  2. Step 2: Convert to fraction form
    812,359.20/1,218,615.60 = 221,383.20/x
  3. Step 3: Cross multiply
    812,359.20x = 1,218,615.60 × 221,383.20
  4. Step 4: Simplify right side
    812,359.20x = 269,781,021,097.92
  5. Step 5: Solve for x
    x = 269,781,021,097.92/812,359.20
  6. Step 6: Final answer
    x = 332,095.73

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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.