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Finding the Fourth Proportional to 324,636.20, 486,723.90 and 124,879.40

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Solution

The fourth proportional to 324,636.20, 486,723.90 and 124,879.40 is: 187,230.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,636.20 : 486,723.90 = 124,879.40 : x
  2. Step 2: Convert to fraction form
    324,636.20/486,723.90 = 124,879.40/x
  3. Step 3: Cross multiply
    324,636.20x = 486,723.90 × 124,879.40
  4. Step 4: Simplify right side
    324,636.20x = 60,781,788,597.66
  5. Step 5: Solve for x
    x = 60,781,788,597.66/324,636.20
  6. Step 6: Final answer
    x = 187,230.47

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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.