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Finding the Fourth Proportional to 398,879.20, 598,238.33 and 146,073.39

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Solution

The fourth proportional to 398,879.20, 598,238.33 and 146,073.39 is: 219,080.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,879.20 : 598,238.33 = 146,073.39 : x
  2. Step 2: Convert to fraction form
    398,879.20/598,238.33 = 146,073.39/x
  3. Step 3: Cross multiply
    398,879.20x = 598,238.33 × 146,073.39
  4. Step 4: Simplify right side
    398,879.20x = 87,386,697,917.28
  5. Step 5: Solve for x
    x = 87,386,697,917.28/398,879.20
  6. Step 6: Final answer
    x = 219,080.61

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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.