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Finding the Fourth Proportional to 391,342.60, 588,266.70 and 363,608.20

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Solution

The fourth proportional to 391,342.60, 588,266.70 and 363,608.20 is: 546,576.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,342.60 : 588,266.70 = 363,608.20 : x
  2. Step 2: Convert to fraction form
    391,342.60/588,266.70 = 363,608.20/x
  3. Step 3: Cross multiply
    391,342.60x = 588,266.70 × 363,608.20
  4. Step 4: Simplify right side
    391,342.60x = 213,898,595,906.94
  5. Step 5: Solve for x
    x = 213,898,595,906.94/391,342.60
  6. Step 6: Final answer
    x = 546,576.31

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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.