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Finding the Fourth Proportional to 574,029.70, 861,372.60 and 219,298.30

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Solution

The fourth proportional to 574,029.70, 861,372.60 and 219,298.30 is: 329,072.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    574,029.70 : 861,372.60 = 219,298.30 : x
  2. Step 2: Convert to fraction form
    574,029.70/861,372.60 = 219,298.30/x
  3. Step 3: Cross multiply
    574,029.70x = 861,372.60 × 219,298.30
  4. Step 4: Simplify right side
    574,029.70x = 188,897,546,846.58
  5. Step 5: Solve for x
    x = 188,897,546,846.58/574,029.70
  6. Step 6: Final answer
    x = 329,072.78

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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.