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Finding the Fourth Proportional to 396,009.33, 546,489.48 and 223,961.07

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Solution

The fourth proportional to 396,009.33, 546,489.48 and 223,961.07 is: 309,064.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,009.33 : 546,489.48 = 223,961.07 : x
  2. Step 2: Convert to fraction form
    396,009.33/546,489.48 = 223,961.07/x
  3. Step 3: Cross multiply
    396,009.33x = 546,489.48 × 223,961.07
  4. Step 4: Simplify right side
    396,009.33x = 122,392,368,684.54
  5. Step 5: Solve for x
    x = 122,392,368,684.54/396,009.33
  6. Step 6: Final answer
    x = 309,064.36

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1.5x scale

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.