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Finding the Fourth Proportional to 394,169.24, 543,953.58 and 215,321.24

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Solution

The fourth proportional to 394,169.24, 543,953.58 and 215,321.24 is: 297,143.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,169.24 : 543,953.58 = 215,321.24 : x
  2. Step 2: Convert to fraction form
    394,169.24/543,953.58 = 215,321.24/x
  3. Step 3: Cross multiply
    394,169.24x = 543,953.58 × 215,321.24
  4. Step 4: Simplify right side
    394,169.24x = 117,124,759,348.04
  5. Step 5: Solve for x
    x = 117,124,759,348.04/394,169.24
  6. Step 6: Final answer
    x = 297,143.33

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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.