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Finding the Fourth Proportional to 396,386.24, 547,183.68 and 243,449.24

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Solution

The fourth proportional to 396,386.24, 547,183.68 and 243,449.24 is: 336,064.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,386.24 : 547,183.68 = 243,449.24 : x
  2. Step 2: Convert to fraction form
    396,386.24/547,183.68 = 243,449.24/x
  3. Step 3: Cross multiply
    396,386.24x = 547,183.68 × 243,449.24
  4. Step 4: Simplify right side
    396,386.24x = 133,211,451,036.40
  5. Step 5: Solve for x
    x = 133,211,451,036.40/396,386.24
  6. Step 6: Final answer
    x = 336,064.77

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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.