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Finding the Fourth Proportional to 220,728.80, 331,438.80 and 150,917.60

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Solution

The fourth proportional to 220,728.80, 331,438.80 and 150,917.60 is: 226,612.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,728.80 : 331,438.80 = 150,917.60 : x
  2. Step 2: Convert to fraction form
    220,728.80/331,438.80 = 150,917.60/x
  3. Step 3: Cross multiply
    220,728.80x = 331,438.80 × 150,917.60
  4. Step 4: Simplify right side
    220,728.80x = 50,019,948,242.88
  5. Step 5: Solve for x
    x = 50,019,948,242.88/220,728.80
  6. Step 6: Final answer
    x = 226,612.70

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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.