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Finding the Fourth Proportional to 220,163.80, 329,856.90 and 136,960.60

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Solution

The fourth proportional to 220,163.80, 329,856.90 and 136,960.60 is: 205,199.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,163.80 : 329,856.90 = 136,960.60 : x
  2. Step 2: Convert to fraction form
    220,163.80/329,856.90 = 136,960.60/x
  3. Step 3: Cross multiply
    220,163.80x = 329,856.90 × 136,960.60
  4. Step 4: Simplify right side
    220,163.80x = 45,177,398,938.14
  5. Step 5: Solve for x
    x = 45,177,398,938.14/220,163.80
  6. Step 6: Final answer
    x = 205,199.03

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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.