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Finding the Fourth Proportional to 218,105.55, 327,158.37 and 68,345.81

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Solution

The fourth proportional to 218,105.55, 327,158.37 and 68,345.81 is: 102,518.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,105.55 : 327,158.37 = 68,345.81 : x
  2. Step 2: Convert to fraction form
    218,105.55/327,158.37 = 68,345.81/x
  3. Step 3: Cross multiply
    218,105.55x = 327,158.37 × 68,345.81
  4. Step 4: Simplify right side
    218,105.55x = 22,359,903,795.93
  5. Step 5: Solve for x
    x = 22,359,903,795.93/218,105.55
  6. Step 6: Final answer
    x = 102,518.73

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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.