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Finding the Fourth Proportional to 639,594.22, 959,378.02 and 213,160.94

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Solution

The fourth proportional to 639,594.22, 959,378.02 and 213,160.94 is: 319,736.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,594.22 : 959,378.02 = 213,160.94 : x
  2. Step 2: Convert to fraction form
    639,594.22/959,378.02 = 213,160.94/x
  3. Step 3: Cross multiply
    639,594.22x = 959,378.02 × 213,160.94
  4. Step 4: Simplify right side
    639,594.22x = 204,501,920,558.54
  5. Step 5: Solve for x
    x = 204,501,920,558.54/639,594.22
  6. Step 6: Final answer
    x = 319,736.97

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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.