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Finding the Fourth Proportional to 396,480, 546,740.22 and 339,309.09

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Solution

The fourth proportional to 396,480, 546,740.22 and 339,309.09 is: 467,902.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,480 : 546,740.22 = 339,309.09 : x
  2. Step 2: Convert to fraction form
    396,480/546,740.22 = 339,309.09/x
  3. Step 3: Cross multiply
    396,480x = 546,740.22 × 339,309.09
  4. Step 4: Simplify right side
    396,480x = 185,513,926,514.60
  5. Step 5: Solve for x
    x = 185,513,926,514.60/396,480
  6. Step 6: Final answer
    x = 467,902.36

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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.