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Finding the Fourth Proportional to 324,079.86, 486,168.39 and 113,680.74

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Solution

The fourth proportional to 324,079.86, 486,168.39 and 113,680.74 is: 170,538.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,079.86 : 486,168.39 = 113,680.74 : x
  2. Step 2: Convert to fraction form
    324,079.86/486,168.39 = 113,680.74/x
  3. Step 3: Cross multiply
    324,079.86x = 486,168.39 × 113,680.74
  4. Step 4: Simplify right side
    324,079.86x = 55,267,982,339.81
  5. Step 5: Solve for x
    x = 55,267,982,339.81/324,079.86
  6. Step 6: Final answer
    x = 170,538.16

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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.