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Finding the Fourth Proportional to 220,105.05, 330,157.58 and 218,792.85

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Solution

The fourth proportional to 220,105.05, 330,157.58 and 218,792.85 is: 328,189.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,105.05 : 330,157.58 = 218,792.85 : x
  2. Step 2: Convert to fraction form
    220,105.05/330,157.58 = 218,792.85/x
  3. Step 3: Cross multiply
    220,105.05x = 330,157.58 × 218,792.85
  4. Step 4: Simplify right side
    220,105.05x = 72,236,116,783.34
  5. Step 5: Solve for x
    x = 72,236,116,783.34/220,105.05
  6. Step 6: Final answer
    x = 328,189.28

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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.