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Finding the Fourth Proportional to 394,994.30, 544,939.92 and 274,075.07

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Solution

The fourth proportional to 394,994.30, 544,939.92 and 274,075.07 is: 378,117.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,994.30 : 544,939.92 = 274,075.07 : x
  2. Step 2: Convert to fraction form
    394,994.30/544,939.92 = 274,075.07/x
  3. Step 3: Cross multiply
    394,994.30x = 544,939.92 × 274,075.07
  4. Step 4: Simplify right side
    394,994.30x = 149,354,444,371.48
  5. Step 5: Solve for x
    x = 149,354,444,371.48/394,994.30
  6. Step 6: Final answer
    x = 378,117.98

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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.