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Finding the Fourth Proportional to 321,049.18, 481,573.77 and 84,391.48

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Solution

The fourth proportional to 321,049.18, 481,573.77 and 84,391.48 is: 126,587.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,049.18 : 481,573.77 = 84,391.48 : x
  2. Step 2: Convert to fraction form
    321,049.18/481,573.77 = 84,391.48/x
  3. Step 3: Cross multiply
    321,049.18x = 481,573.77 × 84,391.48
  4. Step 4: Simplify right side
    321,049.18x = 40,640,721,975.55
  5. Step 5: Solve for x
    x = 40,640,721,975.55/321,049.18
  6. Step 6: Final answer
    x = 126,587.22

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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.