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Finding the Fourth Proportional to 394,665.42, 544,274.85 and 258,649.81

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Solution

The fourth proportional to 394,665.42, 544,274.85 and 258,649.81 is: 356,698.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,665.42 : 544,274.85 = 258,649.81 : x
  2. Step 2: Convert to fraction form
    394,665.42/544,274.85 = 258,649.81/x
  3. Step 3: Cross multiply
    394,665.42x = 544,274.85 × 258,649.81
  4. Step 4: Simplify right side
    394,665.42x = 140,776,586,540.28
  5. Step 5: Solve for x
    x = 140,776,586,540.28/394,665.42
  6. Step 6: Final answer
    x = 356,698.56

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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.