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Finding the Fourth Proportional to 347,367, 479,366.46 and 188,391

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Solution

The fourth proportional to 347,367, 479,366.46 and 188,391 is: 259,979.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,367 : 479,366.46 = 188,391 : x
  2. Step 2: Convert to fraction form
    347,367/479,366.46 = 188,391/x
  3. Step 3: Cross multiply
    347,367x = 479,366.46 × 188,391
  4. Step 4: Simplify right side
    347,367x = 90,308,326,765.86
  5. Step 5: Solve for x
    x = 90,308,326,765.86/347,367
  6. Step 6: Final answer
    x = 259,979.58

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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.