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Finding the Fourth Proportional to 214,229.54, 321,389.26 and 64,480.78

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Solution

The fourth proportional to 214,229.54, 321,389.26 and 64,480.78 is: 96,734.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,229.54 : 321,389.26 = 64,480.78 : x
  2. Step 2: Convert to fraction form
    214,229.54/321,389.26 = 64,480.78/x
  3. Step 3: Cross multiply
    214,229.54x = 321,389.26 × 64,480.78
  4. Step 4: Simplify right side
    214,229.54x = 20,723,430,168.42
  5. Step 5: Solve for x
    x = 20,723,430,168.42/214,229.54
  6. Step 6: Final answer
    x = 96,734.70

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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.