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Finding the Fourth Proportional to 347,133.72, 479,029.81 and 201,939.86

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Solution

The fourth proportional to 347,133.72, 479,029.81 and 201,939.86 is: 278,668.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,133.72 : 479,029.81 = 201,939.86 : x
  2. Step 2: Convert to fraction form
    347,133.72/479,029.81 = 201,939.86/x
  3. Step 3: Cross multiply
    347,133.72x = 479,029.81 × 201,939.86
  4. Step 4: Simplify right side
    347,133.72x = 96,735,212,767.23
  5. Step 5: Solve for x
    x = 96,735,212,767.23/347,133.72
  6. Step 6: Final answer
    x = 278,668.44

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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.