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Finding the Fourth Proportional to 394,644.95, 544,792.19 and 231,278.88

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Solution

The fourth proportional to 394,644.95, 544,792.19 and 231,278.88 is: 319,271.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,644.95 : 544,792.19 = 231,278.88 : x
  2. Step 2: Convert to fraction form
    394,644.95/544,792.19 = 231,278.88/x
  3. Step 3: Cross multiply
    394,644.95x = 544,792.19 × 231,278.88
  4. Step 4: Simplify right side
    394,644.95x = 125,998,927,535.95
  5. Step 5: Solve for x
    x = 125,998,927,535.95/394,644.95
  6. Step 6: Final answer
    x = 319,271.61

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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.