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Finding the Fourth Proportional to 215,110.80, 322,666 and 65,350.48

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Solution

The fourth proportional to 215,110.80, 322,666 and 65,350.48 is: 98,025.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,110.80 : 322,666 = 65,350.48 : x
  2. Step 2: Convert to fraction form
    215,110.80/322,666 = 65,350.48/x
  3. Step 3: Cross multiply
    215,110.80x = 322,666 × 65,350.48
  4. Step 4: Simplify right side
    215,110.80x = 21,086,377,979.68
  5. Step 5: Solve for x
    x = 21,086,377,979.68/215,110.80
  6. Step 6: Final answer
    x = 98,025.66

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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.