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Finding the Fourth Proportional to 548,186.88, 756,514.50 and 306,479.64

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Solution

The fourth proportional to 548,186.88, 756,514.50 and 306,479.64 is: 422,951.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,186.88 : 756,514.50 = 306,479.64 : x
  2. Step 2: Convert to fraction form
    548,186.88/756,514.50 = 306,479.64/x
  3. Step 3: Cross multiply
    548,186.88x = 756,514.50 × 306,479.64
  4. Step 4: Simplify right side
    548,186.88x = 231,856,291,614.78
  5. Step 5: Solve for x
    x = 231,856,291,614.78/548,186.88
  6. Step 6: Final answer
    x = 422,951.19

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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.