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Finding the Fourth Proportional to 218,519.40, 327,738.60 and 60,715.20

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Solution

The fourth proportional to 218,519.40, 327,738.60 and 60,715.20 is: 91,061.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,519.40 : 327,738.60 = 60,715.20 : x
  2. Step 2: Convert to fraction form
    218,519.40/327,738.60 = 60,715.20/x
  3. Step 3: Cross multiply
    218,519.40x = 327,738.60 × 60,715.20
  4. Step 4: Simplify right side
    218,519.40x = 19,898,714,646.72
  5. Step 5: Solve for x
    x = 19,898,714,646.72/218,519.40
  6. Step 6: Final answer
    x = 91,061.55

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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.