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Finding the Fourth Proportional to 214,614.54, 321,921.86 and 81,494.91

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Solution

The fourth proportional to 214,614.54, 321,921.86 and 81,494.91 is: 122,242.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,614.54 : 321,921.86 = 81,494.91 : x
  2. Step 2: Convert to fraction form
    214,614.54/321,921.86 = 81,494.91/x
  3. Step 3: Cross multiply
    214,614.54x = 321,921.86 × 81,494.91
  4. Step 4: Simplify right side
    214,614.54x = 26,234,992,600.26
  5. Step 5: Solve for x
    x = 26,234,992,600.26/214,614.54
  6. Step 6: Final answer
    x = 122,242.38

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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.