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Finding the Fourth Proportional to 394,704.75, 544,705.52 and 215,856.75

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Solution

The fourth proportional to 394,704.75, 544,705.52 and 215,856.75 is: 297,889.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,704.75 : 544,705.52 = 215,856.75 : x
  2. Step 2: Convert to fraction form
    394,704.75/544,705.52 = 215,856.75/x
  3. Step 3: Cross multiply
    394,704.75x = 544,705.52 × 215,856.75
  4. Step 4: Simplify right side
    394,704.75x = 117,578,362,174.98
  5. Step 5: Solve for x
    x = 117,578,362,174.98/394,704.75
  6. Step 6: Final answer
    x = 297,889.40

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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.