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Finding the Fourth Proportional to 220,097.70, 330,146.55 and 131,451.30

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Solution

The fourth proportional to 220,097.70, 330,146.55 and 131,451.30 is: 197,176.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,097.70 : 330,146.55 = 131,451.30 : x
  2. Step 2: Convert to fraction form
    220,097.70/330,146.55 = 131,451.30/x
  3. Step 3: Cross multiply
    220,097.70x = 330,146.55 × 131,451.30
  4. Step 4: Simplify right side
    220,097.70x = 43,398,193,188.02
  5. Step 5: Solve for x
    x = 43,398,193,188.02/220,097.70
  6. Step 6: Final answer
    x = 197,176.95

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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.