Home / 218,715.40-327,635.70-147,856.60

Finding the Fourth Proportional to 218,715.40, 327,635.70 and 147,856.60

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Solution

The fourth proportional to 218,715.40, 327,635.70 and 147,856.60 is: 221,489.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,715.40 : 327,635.70 = 147,856.60 : x
  2. Step 2: Convert to fraction form
    218,715.40/327,635.70 = 147,856.60/x
  3. Step 3: Cross multiply
    218,715.40x = 327,635.70 × 147,856.60
  4. Step 4: Simplify right side
    218,715.40x = 48,443,100,640.62
  5. Step 5: Solve for x
    x = 48,443,100,640.62/218,715.40
  6. Step 6: Final answer
    x = 221,489.21

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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.