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Finding the Fourth Proportional to 351,675.26, 527,512.78 and 85,433.93

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Solution

The fourth proportional to 351,675.26, 527,512.78 and 85,433.93 is: 128,150.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,675.26 : 527,512.78 = 85,433.93 : x
  2. Step 2: Convert to fraction form
    351,675.26/527,512.78 = 85,433.93/x
  3. Step 3: Cross multiply
    351,675.26x = 527,512.78 × 85,433.93
  4. Step 4: Simplify right side
    351,675.26x = 45,067,489,920.63
  5. Step 5: Solve for x
    x = 45,067,489,920.63/351,675.26
  6. Step 6: Final answer
    x = 128,150.87

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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.