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Finding the Fourth Proportional to 220,154.80, 330,232.20 and 190,630.30

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Solution

The fourth proportional to 220,154.80, 330,232.20 and 190,630.30 is: 285,945.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,154.80 : 330,232.20 = 190,630.30 : x
  2. Step 2: Convert to fraction form
    220,154.80/330,232.20 = 190,630.30/x
  3. Step 3: Cross multiply
    220,154.80x = 330,232.20 × 190,630.30
  4. Step 4: Simplify right side
    220,154.80x = 62,952,263,355.66
  5. Step 5: Solve for x
    x = 62,952,263,355.66/220,154.80
  6. Step 6: Final answer
    x = 285,945.45

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Similar ratio
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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.