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Finding the Fourth Proportional to 394,094.25, 543,863.07 and 215,246.25

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Solution

The fourth proportional to 394,094.25, 543,863.07 and 215,246.25 is: 297,046.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,094.25 : 543,863.07 = 215,246.25 : x
  2. Step 2: Convert to fraction form
    394,094.25/543,863.07 = 215,246.25/x
  3. Step 3: Cross multiply
    394,094.25x = 543,863.07 × 215,246.25
  4. Step 4: Simplify right side
    394,094.25x = 117,064,486,330.99
  5. Step 5: Solve for x
    x = 117,064,486,330.99/394,094.25
  6. Step 6: Final answer
    x = 297,046.93

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Similar ratio
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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.