Home / 220,829.20-331,268.10-80,618.20

Finding the Fourth Proportional to 220,829.20, 331,268.10 and 80,618.20

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Solution

The fourth proportional to 220,829.20, 331,268.10 and 80,618.20 is: 120,936.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,829.20 : 331,268.10 = 80,618.20 : x
  2. Step 2: Convert to fraction form
    220,829.20/331,268.10 = 80,618.20/x
  3. Step 3: Cross multiply
    220,829.20x = 331,268.10 × 80,618.20
  4. Step 4: Simplify right side
    220,829.20x = 26,706,237,939.42
  5. Step 5: Solve for x
    x = 26,706,237,939.42/220,829.20
  6. Step 6: Final answer
    x = 120,936.17

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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.