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Finding the Fourth Proportional to 218,221.81, 327,330.54 and 76,066.81

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Solution

The fourth proportional to 218,221.81, 327,330.54 and 76,066.81 is: 114,099.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,221.81 : 327,330.54 = 76,066.81 : x
  2. Step 2: Convert to fraction form
    218,221.81/327,330.54 = 76,066.81/x
  3. Step 3: Cross multiply
    218,221.81x = 327,330.54 × 76,066.81
  4. Step 4: Simplify right side
    218,221.81x = 24,898,989,993.38
  5. Step 5: Solve for x
    x = 24,898,989,993.38/218,221.81
  6. Step 6: Final answer
    x = 114,099.46

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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.