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Finding the Fourth Proportional to 220,143.60, 330,198.80 and 70,399.71

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Solution

The fourth proportional to 220,143.60, 330,198.80 and 70,399.71 is: 105,594.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,143.60 : 330,198.80 = 70,399.71 : x
  2. Step 2: Convert to fraction form
    220,143.60/330,198.80 = 70,399.71/x
  3. Step 3: Cross multiply
    220,143.60x = 330,198.80 × 70,399.71
  4. Step 4: Simplify right side
    220,143.60x = 23,245,899,410.35
  5. Step 5: Solve for x
    x = 23,245,899,410.35/220,143.60
  6. Step 6: Final answer
    x = 105,594.25

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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.