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Finding the Fourth Proportional to 218,110.60, 327,165.90 and 215,000.20

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Solution

The fourth proportional to 218,110.60, 327,165.90 and 215,000.20 is: 322,500.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,110.60 : 327,165.90 = 215,000.20 : x
  2. Step 2: Convert to fraction form
    218,110.60/327,165.90 = 215,000.20/x
  3. Step 3: Cross multiply
    218,110.60x = 327,165.90 × 215,000.20
  4. Step 4: Simplify right side
    218,110.60x = 70,340,733,933.18
  5. Step 5: Solve for x
    x = 70,340,733,933.18/218,110.60
  6. Step 6: Final answer
    x = 322,500.30

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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.