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Finding the Fourth Proportional to 215,287.88, 322,977.98 and 65,540.34

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Solution

The fourth proportional to 215,287.88, 322,977.98 and 65,540.34 is: 98,324.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,287.88 : 322,977.98 = 65,540.34 : x
  2. Step 2: Convert to fraction form
    215,287.88/322,977.98 = 65,540.34/x
  3. Step 3: Cross multiply
    215,287.88x = 322,977.98 × 65,540.34
  4. Step 4: Simplify right side
    215,287.88x = 21,168,086,785.56
  5. Step 5: Solve for x
    x = 21,168,086,785.56/215,287.88
  6. Step 6: Final answer
    x = 98,324.57

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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.