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Finding the Fourth Proportional to 479,144.33, 661,207.59 and 264,279.78

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Solution

The fourth proportional to 479,144.33, 661,207.59 and 264,279.78 is: 364,699.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,144.33 : 661,207.59 = 264,279.78 : x
  2. Step 2: Convert to fraction form
    479,144.33/661,207.59 = 264,279.78/x
  3. Step 3: Cross multiply
    479,144.33x = 661,207.59 × 264,279.78
  4. Step 4: Simplify right side
    479,144.33x = 174,743,798,899.06
  5. Step 5: Solve for x
    x = 174,743,798,899.06/479,144.33
  6. Step 6: Final answer
    x = 364,699.71

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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.