Home / 220,618.70-331,021.38-120,662.20

Finding the Fourth Proportional to 220,618.70, 331,021.38 and 120,662.20

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Solution

The fourth proportional to 220,618.70, 331,021.38 and 120,662.20 is: 181,044.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,618.70 : 331,021.38 = 120,662.20 : x
  2. Step 2: Convert to fraction form
    220,618.70/331,021.38 = 120,662.20/x
  3. Step 3: Cross multiply
    220,618.70x = 331,021.38 × 120,662.20
  4. Step 4: Simplify right side
    220,618.70x = 39,941,767,957.84
  5. Step 5: Solve for x
    x = 39,941,767,957.84/220,618.70
  6. Step 6: Final answer
    x = 181,044.34

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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.