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Finding the Fourth Proportional to 218,414.40, 327,621.60 and 148,430.40

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Solution

The fourth proportional to 218,414.40, 327,621.60 and 148,430.40 is: 222,645.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,414.40 : 327,621.60 = 148,430.40 : x
  2. Step 2: Convert to fraction form
    218,414.40/327,621.60 = 148,430.40/x
  3. Step 3: Cross multiply
    218,414.40x = 327,621.60 × 148,430.40
  4. Step 4: Simplify right side
    218,414.40x = 48,629,005,136.64
  5. Step 5: Solve for x
    x = 48,629,005,136.64/218,414.40
  6. Step 6: Final answer
    x = 222,645.60

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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.