Home / 275,021.17-379,552.94-154,185.78

Finding the Fourth Proportional to 275,021.17, 379,552.94 and 154,185.78

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Solution

The fourth proportional to 275,021.17, 379,552.94 and 154,185.78 is: 212,789.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,021.17 : 379,552.94 = 154,185.78 : x
  2. Step 2: Convert to fraction form
    275,021.17/379,552.94 = 154,185.78/x
  3. Step 3: Cross multiply
    275,021.17x = 379,552.94 × 154,185.78
  4. Step 4: Simplify right side
    275,021.17x = 58,521,665,200.80
  5. Step 5: Solve for x
    x = 58,521,665,200.80/275,021.17
  6. Step 6: Final answer
    x = 212,789.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.