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Finding the Fourth Proportional to 479,337.45, 661,725.37 and 298,107.78

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Solution

The fourth proportional to 479,337.45, 661,725.37 and 298,107.78 is: 411,537.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,337.45 : 661,725.37 = 298,107.78 : x
  2. Step 2: Convert to fraction form
    479,337.45/661,725.37 = 298,107.78/x
  3. Step 3: Cross multiply
    479,337.45x = 661,725.37 × 298,107.78
  4. Step 4: Simplify right side
    479,337.45x = 197,265,481,020.38
  5. Step 5: Solve for x
    x = 197,265,481,020.38/479,337.45
  6. Step 6: Final answer
    x = 411,537.80

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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.