Home / 394,724.79-544,723.28-217,920.70

Finding the Fourth Proportional to 394,724.79, 544,723.28 and 217,920.70

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Solution

The fourth proportional to 394,724.79, 544,723.28 and 217,920.70 is: 300,732.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,724.79 : 544,723.28 = 217,920.70 : x
  2. Step 2: Convert to fraction form
    394,724.79/544,723.28 = 217,920.70/x
  3. Step 3: Cross multiply
    394,724.79x = 544,723.28 × 217,920.70
  4. Step 4: Simplify right side
    394,724.79x = 118,706,476,032.48
  5. Step 5: Solve for x
    x = 118,706,476,032.48/394,724.79
  6. Step 6: Final answer
    x = 300,732.25

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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.