Home / 358,309.38-494,214.03-243,520.65

Finding the Fourth Proportional to 358,309.38, 494,214.03 and 243,520.65

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Solution

The fourth proportional to 358,309.38, 494,214.03 and 243,520.65 is: 335,886.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,309.38 : 494,214.03 = 243,520.65 : x
  2. Step 2: Convert to fraction form
    358,309.38/494,214.03 = 243,520.65/x
  3. Step 3: Cross multiply
    358,309.38x = 494,214.03 × 243,520.65
  4. Step 4: Simplify right side
    358,309.38x = 120,351,321,824.72
  5. Step 5: Solve for x
    x = 120,351,321,824.72/358,309.38
  6. Step 6: Final answer
    x = 335,886.61

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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.