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Finding the Fourth Proportional to 394,678.85, 544,905.86 and 273,777.84

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Solution

The fourth proportional to 394,678.85, 544,905.86 and 273,777.84 is: 377,986.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,678.85 : 544,905.86 = 273,777.84 : x
  2. Step 2: Convert to fraction form
    394,678.85/544,905.86 = 273,777.84/x
  3. Step 3: Cross multiply
    394,678.85x = 544,905.86 × 273,777.84
  4. Step 4: Simplify right side
    394,678.85x = 149,183,147,985.25
  5. Step 5: Solve for x
    x = 149,183,147,985.25/394,678.85
  6. Step 6: Final answer
    x = 377,986.18

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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.