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Finding the Fourth Proportional to 396,386.38, 546,857.49 and 226,529.38

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Solution

The fourth proportional to 396,386.38, 546,857.49 and 226,529.38 is: 312,521.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,386.38 : 546,857.49 = 226,529.38 : x
  2. Step 2: Convert to fraction form
    396,386.38/546,857.49 = 226,529.38/x
  3. Step 3: Cross multiply
    396,386.38x = 546,857.49 × 226,529.38
  4. Step 4: Simplify right side
    396,386.38x = 123,879,288,158.06
  5. Step 5: Solve for x
    x = 123,879,288,158.06/396,386.38
  6. Step 6: Final answer
    x = 312,521.56

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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.