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Finding the Fourth Proportional to 218,639.34, 327,218.25 and 134,452.80

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Solution

The fourth proportional to 218,639.34, 327,218.25 and 134,452.80 is: 201,223.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,639.34 : 327,218.25 = 134,452.80 : x
  2. Step 2: Convert to fraction form
    218,639.34/327,218.25 = 134,452.80/x
  3. Step 3: Cross multiply
    218,639.34x = 327,218.25 × 134,452.80
  4. Step 4: Simplify right side
    218,639.34x = 43,995,409,923.60
  5. Step 5: Solve for x
    x = 43,995,409,923.60/218,639.34
  6. Step 6: Final answer
    x = 201,223.67

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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.