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Finding the Fourth Proportional to 399,323.86, 598,033.23 and 221,389.54

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Solution

The fourth proportional to 399,323.86, 598,033.23 and 221,389.54 is: 331,556.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,323.86 : 598,033.23 = 221,389.54 : x
  2. Step 2: Convert to fraction form
    399,323.86/598,033.23 = 221,389.54/x
  3. Step 3: Cross multiply
    399,323.86x = 598,033.23 × 221,389.54
  4. Step 4: Simplify right side
    399,323.86x = 132,398,301,694.41
  5. Step 5: Solve for x
    x = 132,398,301,694.41/399,323.86
  6. Step 6: Final answer
    x = 331,556.20

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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.