Home / 394,977.31-545,055.20-225,266.11

Finding the Fourth Proportional to 394,977.31, 545,055.20 and 225,266.11

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Solution

The fourth proportional to 394,977.31, 545,055.20 and 225,266.11 is: 310,859.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,977.31 : 545,055.20 = 225,266.11 : x
  2. Step 2: Convert to fraction form
    394,977.31/545,055.20 = 225,266.11/x
  3. Step 3: Cross multiply
    394,977.31x = 545,055.20 × 225,266.11
  4. Step 4: Simplify right side
    394,977.31x = 122,782,461,914.00
  5. Step 5: Solve for x
    x = 122,782,461,914.00/394,977.31
  6. Step 6: Final answer
    x = 310,859.54

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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.