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Finding the Fourth Proportional to 275,106, 379,652.04 and 155,874

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Solution

The fourth proportional to 275,106, 379,652.04 and 155,874 is: 215,109.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,106 : 379,652.04 = 155,874 : x
  2. Step 2: Convert to fraction form
    275,106/379,652.04 = 155,874/x
  3. Step 3: Cross multiply
    275,106x = 379,652.04 × 155,874
  4. Step 4: Simplify right side
    275,106x = 59,177,882,082.96
  5. Step 5: Solve for x
    x = 59,177,882,082.96/275,106
  6. Step 6: Final answer
    x = 215,109.38

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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.