Home / 279,288-385,414.20-151,961.40

Finding the Fourth Proportional to 279,288, 385,414.20 and 151,961.40

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Solution

The fourth proportional to 279,288, 385,414.20 and 151,961.40 is: 209,704.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,288 : 385,414.20 = 151,961.40 : x
  2. Step 2: Convert to fraction form
    279,288/385,414.20 = 151,961.40/x
  3. Step 3: Cross multiply
    279,288x = 385,414.20 × 151,961.40
  4. Step 4: Simplify right side
    279,288x = 58,568,081,411.88
  5. Step 5: Solve for x
    x = 58,568,081,411.88/279,288
  6. Step 6: Final answer
    x = 209,704.97

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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.