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Finding the Fourth Proportional to 324,190.20, 486,026.10 and 137,047.80

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Solution

The fourth proportional to 324,190.20, 486,026.10 and 137,047.80 is: 205,462.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,190.20 : 486,026.10 = 137,047.80 : x
  2. Step 2: Convert to fraction form
    324,190.20/486,026.10 = 137,047.80/x
  3. Step 3: Cross multiply
    324,190.20x = 486,026.10 × 137,047.80
  4. Step 4: Simplify right side
    324,190.20x = 66,608,807,747.58
  5. Step 5: Solve for x
    x = 66,608,807,747.58/324,190.20
  6. Step 6: Final answer
    x = 205,462.13

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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.