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Finding the Fourth Proportional to 398,660.72, 598,235.27 and 158,889.65

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Solution

The fourth proportional to 398,660.72, 598,235.27 and 158,889.65 is: 238,431.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,660.72 : 598,235.27 = 158,889.65 : x
  2. Step 2: Convert to fraction form
    398,660.72/598,235.27 = 158,889.65/x
  3. Step 3: Cross multiply
    398,660.72x = 598,235.27 × 158,889.65
  4. Step 4: Simplify right side
    398,660.72x = 95,053,388,882.33
  5. Step 5: Solve for x
    x = 95,053,388,882.33/398,660.72
  6. Step 6: Final answer
    x = 238,431.79

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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.