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Finding the Fourth Proportional to 215,682, 297,606.15 and 125,020.27

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Solution

The fourth proportional to 215,682, 297,606.15 and 125,020.27 is: 172,507.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,682 : 297,606.15 = 125,020.27 : x
  2. Step 2: Convert to fraction form
    215,682/297,606.15 = 125,020.27/x
  3. Step 3: Cross multiply
    215,682x = 297,606.15 × 125,020.27
  4. Step 4: Simplify right side
    215,682x = 37,206,801,226.66
  5. Step 5: Solve for x
    x = 37,206,801,226.66/215,682
  6. Step 6: Final answer
    x = 172,507.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.