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Finding the Fourth Proportional to 220,523.40, 330,785.10 and 115,328.70

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Solution

The fourth proportional to 220,523.40, 330,785.10 and 115,328.70 is: 172,993.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,523.40 : 330,785.10 = 115,328.70 : x
  2. Step 2: Convert to fraction form
    220,523.40/330,785.10 = 115,328.70/x
  3. Step 3: Cross multiply
    220,523.40x = 330,785.10 × 115,328.70
  4. Step 4: Simplify right side
    220,523.40x = 38,149,015,562.37
  5. Step 5: Solve for x
    x = 38,149,015,562.37/220,523.40
  6. Step 6: Final answer
    x = 172,993.05

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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.