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Finding the Fourth Proportional to 394,728.28, 544,728.10 and 217,924.20

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Solution

The fourth proportional to 394,728.28, 544,728.10 and 217,924.20 is: 300,737.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,728.28 : 544,728.10 = 217,924.20 : x
  2. Step 2: Convert to fraction form
    394,728.28/544,728.10 = 217,924.20/x
  3. Step 3: Cross multiply
    394,728.28x = 544,728.10 × 217,924.20
  4. Step 4: Simplify right side
    394,728.28x = 118,709,435,410.02
  5. Step 5: Solve for x
    x = 118,709,435,410.02/394,728.28
  6. Step 6: Final answer
    x = 300,737.09

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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.