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Finding the Fourth Proportional to 218,330.60, 327,511.02 and 85,166.60

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Solution

The fourth proportional to 218,330.60, 327,511.02 and 85,166.60 is: 127,755.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,330.60 : 327,511.02 = 85,166.60 : x
  2. Step 2: Convert to fraction form
    218,330.60/327,511.02 = 85,166.60/x
  3. Step 3: Cross multiply
    218,330.60x = 327,511.02 × 85,166.60
  4. Step 4: Simplify right side
    218,330.60x = 27,893,000,035.93
  5. Step 5: Solve for x
    x = 27,893,000,035.93/218,330.60
  6. Step 6: Final answer
    x = 127,755.80

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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.