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Finding the Fourth Proportional to 259,668.37, 389,553.05 and 99,732.60

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Solution

The fourth proportional to 259,668.37, 389,553.05 and 99,732.60 is: 149,618.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,668.37 : 389,553.05 = 99,732.60 : x
  2. Step 2: Convert to fraction form
    259,668.37/389,553.05 = 99,732.60/x
  3. Step 3: Cross multiply
    259,668.37x = 389,553.05 × 99,732.60
  4. Step 4: Simplify right side
    259,668.37x = 38,851,139,488.31
  5. Step 5: Solve for x
    x = 38,851,139,488.31/259,668.37
  6. Step 6: Final answer
    x = 149,618.30

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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.