Home / 396,128.70-546,647.22-226,362.78

Finding the Fourth Proportional to 396,128.70, 546,647.22 and 226,362.78

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Solution

The fourth proportional to 396,128.70, 546,647.22 and 226,362.78 is: 312,374.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,128.70 : 546,647.22 = 226,362.78 : x
  2. Step 2: Convert to fraction form
    396,128.70/546,647.22 = 226,362.78/x
  3. Step 3: Cross multiply
    396,128.70x = 546,647.22 × 226,362.78
  4. Step 4: Simplify right side
    396,128.70x = 123,740,584,398.47
  5. Step 5: Solve for x
    x = 123,740,584,398.47/396,128.70
  6. Step 6: Final answer
    x = 312,374.70

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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.