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Finding the Fourth Proportional to 318,640.68, 439,673.52 and 182,648.64

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Solution

The fourth proportional to 318,640.68, 439,673.52 and 182,648.64 is: 252,026.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,640.68 : 439,673.52 = 182,648.64 : x
  2. Step 2: Convert to fraction form
    318,640.68/439,673.52 = 182,648.64/x
  3. Step 3: Cross multiply
    318,640.68x = 439,673.52 × 182,648.64
  4. Step 4: Simplify right side
    318,640.68x = 80,305,770,472.01
  5. Step 5: Solve for x
    x = 80,305,770,472.01/318,640.68
  6. Step 6: Final answer
    x = 252,026.11

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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.