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Finding the Fourth Proportional to 394,364.16, 544,226.56 and 215,516.16

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Solution

The fourth proportional to 394,364.16, 544,226.56 and 215,516.16 is: 297,414.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,364.16 : 544,226.56 = 215,516.16 : x
  2. Step 2: Convert to fraction form
    394,364.16/544,226.56 = 215,516.16/x
  3. Step 3: Cross multiply
    394,364.16x = 544,226.56 × 215,516.16
  4. Step 4: Simplify right side
    394,364.16x = 117,289,618,381.21
  5. Step 5: Solve for x
    x = 117,289,618,381.21/394,364.16
  6. Step 6: Final answer
    x = 297,414.50

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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.