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Finding the Fourth Proportional to 322,151.42, 483,189.58 and 85,512.48

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Solution

The fourth proportional to 322,151.42, 483,189.58 and 85,512.48 is: 128,258.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,151.42 : 483,189.58 = 85,512.48 : x
  2. Step 2: Convert to fraction form
    322,151.42/483,189.58 = 85,512.48/x
  3. Step 3: Cross multiply
    322,151.42x = 483,189.58 × 85,512.48
  4. Step 4: Simplify right side
    322,151.42x = 41,318,739,295.96
  5. Step 5: Solve for x
    x = 41,318,739,295.96/322,151.42
  6. Step 6: Final answer
    x = 128,258.75

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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.