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Finding the Fourth Proportional to 215,760.98, 323,629.82 and 66,001.29

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Solution

The fourth proportional to 215,760.98, 323,629.82 and 66,001.29 is: 98,998.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,760.98 : 323,629.82 = 66,001.29 : x
  2. Step 2: Convert to fraction form
    215,760.98/323,629.82 = 66,001.29/x
  3. Step 3: Cross multiply
    215,760.98x = 323,629.82 × 66,001.29
  4. Step 4: Simplify right side
    215,760.98x = 21,359,985,767.47
  5. Step 5: Solve for x
    x = 21,359,985,767.47/215,760.98
  6. Step 6: Final answer
    x = 98,998.37

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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.