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Finding the Fourth Proportional to 205,668.64, 308,502.84 and 115,717.36

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Solution

The fourth proportional to 205,668.64, 308,502.84 and 115,717.36 is: 173,575.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,668.64 : 308,502.84 = 115,717.36 : x
  2. Step 2: Convert to fraction form
    205,668.64/308,502.84 = 115,717.36/x
  3. Step 3: Cross multiply
    205,668.64x = 308,502.84 × 115,717.36
  4. Step 4: Simplify right side
    205,668.64x = 35,699,134,197.30
  5. Step 5: Solve for x
    x = 35,699,134,197.30/205,668.64
  6. Step 6: Final answer
    x = 173,575.97

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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.