Home / 218,922.20-328,383.30-144,126.80

Finding the Fourth Proportional to 218,922.20, 328,383.30 and 144,126.80

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Solution

The fourth proportional to 218,922.20, 328,383.30 and 144,126.80 is: 216,190.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,922.20 : 328,383.30 = 144,126.80 : x
  2. Step 2: Convert to fraction form
    218,922.20/328,383.30 = 144,126.80/x
  3. Step 3: Cross multiply
    218,922.20x = 328,383.30 × 144,126.80
  4. Step 4: Simplify right side
    218,922.20x = 47,328,834,202.44
  5. Step 5: Solve for x
    x = 47,328,834,202.44/218,922.20
  6. Step 6: Final answer
    x = 216,190.20

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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.