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Finding the Fourth Proportional to 220,502.20, 330,315.90 and 131,491.30

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Solution

The fourth proportional to 220,502.20, 330,315.90 and 131,491.30 is: 196,976.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,502.20 : 330,315.90 = 131,491.30 : x
  2. Step 2: Convert to fraction form
    220,502.20/330,315.90 = 131,491.30/x
  3. Step 3: Cross multiply
    220,502.20x = 330,315.90 × 131,491.30
  4. Step 4: Simplify right side
    220,502.20x = 43,433,667,101.67
  5. Step 5: Solve for x
    x = 43,433,667,101.67/220,502.20
  6. Step 6: Final answer
    x = 196,976.12

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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.