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Finding the Fourth Proportional to 394,643.95, 544,790.81 and 231,277.88

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Solution

The fourth proportional to 394,643.95, 544,790.81 and 231,277.88 is: 319,270.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,643.95 : 544,790.81 = 231,277.88 : x
  2. Step 2: Convert to fraction form
    394,643.95/544,790.81 = 231,277.88/x
  3. Step 3: Cross multiply
    394,643.95x = 544,790.81 × 231,277.88
  4. Step 4: Simplify right side
    394,643.95x = 125,998,065,520.46
  5. Step 5: Solve for x
    x = 125,998,065,520.46/394,643.95
  6. Step 6: Final answer
    x = 319,270.23

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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.