Home / 396,823.32-547,620.16-215,538.78

Finding the Fourth Proportional to 396,823.32, 547,620.16 and 215,538.78

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Solution

The fourth proportional to 396,823.32, 547,620.16 and 215,538.78 is: 297,445.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,823.32 : 547,620.16 = 215,538.78 : x
  2. Step 2: Convert to fraction form
    396,823.32/547,620.16 = 215,538.78/x
  3. Step 3: Cross multiply
    396,823.32x = 547,620.16 × 215,538.78
  4. Step 4: Simplify right side
    396,823.32x = 118,033,381,189.81
  5. Step 5: Solve for x
    x = 118,033,381,189.81/396,823.32
  6. Step 6: Final answer
    x = 297,445.68

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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.