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Finding the Fourth Proportional to 358,308.38, 494,212.65 and 243,519.65

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Solution

The fourth proportional to 358,308.38, 494,212.65 and 243,519.65 is: 335,885.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,308.38 : 494,212.65 = 243,519.65 : x
  2. Step 2: Convert to fraction form
    358,308.38/494,212.65 = 243,519.65/x
  3. Step 3: Cross multiply
    358,308.38x = 494,212.65 × 243,519.65
  4. Step 4: Simplify right side
    358,308.38x = 120,350,491,553.57
  5. Step 5: Solve for x
    x = 120,350,491,553.57/358,308.38
  6. Step 6: Final answer
    x = 335,885.23

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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.