Home / 289,115.28-398,979.06-161,815.44

Finding the Fourth Proportional to 289,115.28, 398,979.06 and 161,815.44

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Solution

The fourth proportional to 289,115.28, 398,979.06 and 161,815.44 is: 223,305.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,115.28 : 398,979.06 = 161,815.44 : x
  2. Step 2: Convert to fraction form
    289,115.28/398,979.06 = 161,815.44/x
  3. Step 3: Cross multiply
    289,115.28x = 398,979.06 × 161,815.44
  4. Step 4: Simplify right side
    289,115.28x = 64,560,972,144.69
  5. Step 5: Solve for x
    x = 64,560,972,144.69/289,115.28
  6. Step 6: Final answer
    x = 223,305.29

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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.