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Finding the Fourth Proportional to 220,031.40, 330,047.10 and 79,794.60

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Solution

The fourth proportional to 220,031.40, 330,047.10 and 79,794.60 is: 119,691.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,031.40 : 330,047.10 = 79,794.60 : x
  2. Step 2: Convert to fraction form
    220,031.40/330,047.10 = 79,794.60/x
  3. Step 3: Cross multiply
    220,031.40x = 330,047.10 × 79,794.60
  4. Step 4: Simplify right side
    220,031.40x = 26,335,976,325.66
  5. Step 5: Solve for x
    x = 26,335,976,325.66/220,031.40
  6. Step 6: Final answer
    x = 119,691.90

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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.