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Finding the Fourth Proportional to 351,524.90, 485,113.24 and 215,633.78

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Solution

The fourth proportional to 351,524.90, 485,113.24 and 215,633.78 is: 297,580.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,524.90 : 485,113.24 = 215,633.78 : x
  2. Step 2: Convert to fraction form
    351,524.90/485,113.24 = 215,633.78/x
  3. Step 3: Cross multiply
    351,524.90x = 485,113.24 × 215,633.78
  4. Step 4: Simplify right side
    351,524.90x = 104,606,801,669.25
  5. Step 5: Solve for x
    x = 104,606,801,669.25/351,524.90
  6. Step 6: Final answer
    x = 297,580.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.