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Finding the Fourth Proportional to 396,515.92, 547,224.66 and 226,782.76

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Solution

The fourth proportional to 396,515.92, 547,224.66 and 226,782.76 is: 312,978.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,515.92 : 547,224.66 = 226,782.76 : x
  2. Step 2: Convert to fraction form
    396,515.92/547,224.66 = 226,782.76/x
  3. Step 3: Cross multiply
    396,515.92x = 547,224.66 × 226,782.76
  4. Step 4: Simplify right side
    396,515.92x = 124,101,118,734.86
  5. Step 5: Solve for x
    x = 124,101,118,734.86/396,515.92
  6. Step 6: Final answer
    x = 312,978.91

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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.