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Finding the Fourth Proportional to 220,191.30, 330,286.95 and 79,931.70

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Solution

The fourth proportional to 220,191.30, 330,286.95 and 79,931.70 is: 119,897.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,191.30 : 330,286.95 = 79,931.70 : x
  2. Step 2: Convert to fraction form
    220,191.30/330,286.95 = 79,931.70/x
  3. Step 3: Cross multiply
    220,191.30x = 330,286.95 × 79,931.70
  4. Step 4: Simplify right side
    220,191.30x = 26,400,397,401.32
  5. Step 5: Solve for x
    x = 26,400,397,401.32/220,191.30
  6. Step 6: Final answer
    x = 119,897.55

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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.