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Finding the Fourth Proportional to 218,161.79, 327,246.78 and 68,398.76

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Solution

The fourth proportional to 218,161.79, 327,246.78 and 68,398.76 is: 102,599.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,161.79 : 327,246.78 = 68,398.76 : x
  2. Step 2: Convert to fraction form
    218,161.79/327,246.78 = 68,398.76/x
  3. Step 3: Cross multiply
    218,161.79x = 327,246.78 × 68,398.76
  4. Step 4: Simplify right side
    218,161.79x = 22,383,271,987.77
  5. Step 5: Solve for x
    x = 22,383,271,987.77/218,161.79
  6. Step 6: Final answer
    x = 102,599.42

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1.5x scale

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.