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Finding the Fourth Proportional to 639,262.89, 959,050.49 and 212,797.89

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Solution

The fourth proportional to 639,262.89, 959,050.49 and 212,797.89 is: 319,248.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,262.89 : 959,050.49 = 212,797.89 : x
  2. Step 2: Convert to fraction form
    639,262.89/959,050.49 = 212,797.89/x
  3. Step 3: Cross multiply
    639,262.89x = 959,050.49 × 212,797.89
  4. Step 4: Simplify right side
    639,262.89x = 204,083,919,611.48
  5. Step 5: Solve for x
    x = 204,083,919,611.48/639,262.89
  6. Step 6: Final answer
    x = 319,248.81

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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.