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Finding the Fourth Proportional to 352,906.72, 529,227.60 and 128,211.64

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Solution

The fourth proportional to 352,906.72, 529,227.60 and 128,211.64 is: 192,269.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,906.72 : 529,227.60 = 128,211.64 : x
  2. Step 2: Convert to fraction form
    352,906.72/529,227.60 = 128,211.64/x
  3. Step 3: Cross multiply
    352,906.72x = 529,227.60 × 128,211.64
  4. Step 4: Simplify right side
    352,906.72x = 67,853,138,529.26
  5. Step 5: Solve for x
    x = 67,853,138,529.26/352,906.72
  6. Step 6: Final answer
    x = 192,269.33

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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.