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Finding the Fourth Proportional to 398,889.72, 598,329.99 and 114,587.24

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Solution

The fourth proportional to 398,889.72, 598,329.99 and 114,587.24 is: 171,879.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,889.72 : 598,329.99 = 114,587.24 : x
  2. Step 2: Convert to fraction form
    398,889.72/598,329.99 = 114,587.24/x
  3. Step 3: Cross multiply
    398,889.72x = 598,329.99 × 114,587.24
  4. Step 4: Simplify right side
    398,889.72x = 68,560,979,171.68
  5. Step 5: Solve for x
    x = 68,560,979,171.68/398,889.72
  6. Step 6: Final answer
    x = 171,879.53

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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.