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Finding the Fourth Proportional to 218,085.55, 327,127.91 and 68,337.32

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Solution

The fourth proportional to 218,085.55, 327,127.91 and 68,337.32 is: 102,505.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,085.55 : 327,127.91 = 68,337.32 : x
  2. Step 2: Convert to fraction form
    218,085.55/327,127.91 = 68,337.32/x
  3. Step 3: Cross multiply
    218,085.55x = 327,127.91 × 68,337.32
  4. Step 4: Simplify right side
    218,085.55x = 22,355,043,030.96
  5. Step 5: Solve for x
    x = 22,355,043,030.96/218,085.55
  6. Step 6: Final answer
    x = 102,505.84

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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.