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Finding the Fourth Proportional to 394,887.42, 544,942.59 and 213,598.79

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Solution

The fourth proportional to 394,887.42, 544,942.59 and 213,598.79 is: 294,765.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,887.42 : 544,942.59 = 213,598.79 : x
  2. Step 2: Convert to fraction form
    394,887.42/544,942.59 = 213,598.79/x
  3. Step 3: Cross multiply
    394,887.42x = 544,942.59 × 213,598.79
  4. Step 4: Simplify right side
    394,887.42x = 116,399,076,361.29
  5. Step 5: Solve for x
    x = 116,399,076,361.29/394,887.42
  6. Step 6: Final answer
    x = 294,765.22

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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.