Home / 220,680.28-331,069.65-80,438.91

Finding the Fourth Proportional to 220,680.28, 331,069.65 and 80,438.91

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Solution

The fourth proportional to 220,680.28, 331,069.65 and 80,438.91 is: 120,676.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,680.28 : 331,069.65 = 80,438.91 : x
  2. Step 2: Convert to fraction form
    220,680.28/331,069.65 = 80,438.91/x
  3. Step 3: Cross multiply
    220,680.28x = 331,069.65 × 80,438.91
  4. Step 4: Simplify right side
    220,680.28x = 26,630,880,236.92
  5. Step 5: Solve for x
    x = 26,630,880,236.92/220,680.28
  6. Step 6: Final answer
    x = 120,676.30

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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.