Home / 268,728.84-403,028.46-79,137.54

Finding the Fourth Proportional to 268,728.84, 403,028.46 and 79,137.54

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Solution

The fourth proportional to 268,728.84, 403,028.46 and 79,137.54 is: 118,687.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,728.84 : 403,028.46 = 79,137.54 : x
  2. Step 2: Convert to fraction form
    268,728.84/403,028.46 = 79,137.54/x
  3. Step 3: Cross multiply
    268,728.84x = 403,028.46 × 79,137.54
  4. Step 4: Simplify right side
    268,728.84x = 31,894,680,874.39
  5. Step 5: Solve for x
    x = 31,894,680,874.39/268,728.84
  6. Step 6: Final answer
    x = 118,687.23

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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.