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Finding the Fourth Proportional to 386,601.21, 579,668.85 and 173,330.55

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Solution

The fourth proportional to 386,601.21, 579,668.85 and 173,330.55 is: 259,891.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,601.21 : 579,668.85 = 173,330.55 : x
  2. Step 2: Convert to fraction form
    386,601.21/579,668.85 = 173,330.55/x
  3. Step 3: Cross multiply
    386,601.21x = 579,668.85 × 173,330.55
  4. Step 4: Simplify right side
    386,601.21x = 100,474,320,588.37
  5. Step 5: Solve for x
    x = 100,474,320,588.37/386,601.21
  6. Step 6: Final answer
    x = 259,891.38

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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.