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Finding the Fourth Proportional to 221,078.80, 331,423.80 and 132,367.60

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Solution

The fourth proportional to 221,078.80, 331,423.80 and 132,367.60 is: 198,435.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,078.80 : 331,423.80 = 132,367.60 : x
  2. Step 2: Convert to fraction form
    221,078.80/331,423.80 = 132,367.60/x
  3. Step 3: Cross multiply
    221,078.80x = 331,423.80 × 132,367.60
  4. Step 4: Simplify right side
    221,078.80x = 43,869,772,988.88
  5. Step 5: Solve for x
    x = 43,869,772,988.88/221,078.80
  6. Step 6: Final answer
    x = 198,435.01

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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.