Home / 268,781.33-402,890.70-100,233.84

Finding the Fourth Proportional to 268,781.33, 402,890.70 and 100,233.84

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Solution

The fourth proportional to 268,781.33, 402,890.70 and 100,233.84 is: 150,245.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,781.33 : 402,890.70 = 100,233.84 : x
  2. Step 2: Convert to fraction form
    268,781.33/402,890.70 = 100,233.84/x
  3. Step 3: Cross multiply
    268,781.33x = 402,890.70 × 100,233.84
  4. Step 4: Simplify right side
    268,781.33x = 40,383,281,961.29
  5. Step 5: Solve for x
    x = 40,383,281,961.29/268,781.33
  6. Step 6: Final answer
    x = 150,245.86

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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.