Home / 262,830.40-394,383.30-120,718.60

Finding the Fourth Proportional to 262,830.40, 394,383.30 and 120,718.60

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Solution

The fourth proportional to 262,830.40, 394,383.30 and 120,718.60 is: 181,141.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,830.40 : 394,383.30 = 120,718.60 : x
  2. Step 2: Convert to fraction form
    262,830.40/394,383.30 = 120,718.60/x
  3. Step 3: Cross multiply
    262,830.40x = 394,383.30 × 120,718.60
  4. Step 4: Simplify right side
    262,830.40x = 47,609,399,839.38
  5. Step 5: Solve for x
    x = 47,609,399,839.38/262,830.40
  6. Step 6: Final answer
    x = 181,141.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.