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Finding the Fourth Proportional to 218,604.20, 327,906.30 and 70,860.20

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Solution

The fourth proportional to 218,604.20, 327,906.30 and 70,860.20 is: 106,290.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,604.20 : 327,906.30 = 70,860.20 : x
  2. Step 2: Convert to fraction form
    218,604.20/327,906.30 = 70,860.20/x
  3. Step 3: Cross multiply
    218,604.20x = 327,906.30 × 70,860.20
  4. Step 4: Simplify right side
    218,604.20x = 23,235,505,999.26
  5. Step 5: Solve for x
    x = 23,235,505,999.26/218,604.20
  6. Step 6: Final answer
    x = 106,290.30

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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.