Home / 220,986.40-331,479.60-80,845.60

Finding the Fourth Proportional to 220,986.40, 331,479.60 and 80,845.60

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Solution

The fourth proportional to 220,986.40, 331,479.60 and 80,845.60 is: 121,268.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,986.40 : 331,479.60 = 80,845.60 : x
  2. Step 2: Convert to fraction form
    220,986.40/331,479.60 = 80,845.60/x
  3. Step 3: Cross multiply
    220,986.40x = 331,479.60 × 80,845.60
  4. Step 4: Simplify right side
    220,986.40x = 26,798,667,149.76
  5. Step 5: Solve for x
    x = 26,798,667,149.76/220,986.40
  6. Step 6: Final answer
    x = 121,268.40

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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.