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Finding the Fourth Proportional to 639,592.22, 959,375.03 and 213,158.94

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Solution

The fourth proportional to 639,592.22, 959,375.03 and 213,158.94 is: 319,733.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,592.22 : 959,375.03 = 213,158.94 : x
  2. Step 2: Convert to fraction form
    639,592.22/959,375.03 = 213,158.94/x
  3. Step 3: Cross multiply
    639,592.22x = 959,375.03 × 213,158.94
  4. Step 4: Simplify right side
    639,592.22x = 204,499,363,391.47
  5. Step 5: Solve for x
    x = 204,499,363,391.47/639,592.22
  6. Step 6: Final answer
    x = 319,733.98

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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.