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Finding the Fourth Proportional to 218,522.07, 327,783.11 and 78,379.11

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Solution

The fourth proportional to 218,522.07, 327,783.11 and 78,379.11 is: 117,568.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,522.07 : 327,783.11 = 78,379.11 : x
  2. Step 2: Convert to fraction form
    218,522.07/327,783.11 = 78,379.11/x
  3. Step 3: Cross multiply
    218,522.07x = 327,783.11 × 78,379.11
  4. Step 4: Simplify right side
    218,522.07x = 25,691,348,042.94
  5. Step 5: Solve for x
    x = 25,691,348,042.94/218,522.07
  6. Step 6: Final answer
    x = 117,568.67

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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.