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Finding the Fourth Proportional to 285,028.66, 393,168.19 and 188,233.41

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Solution

The fourth proportional to 285,028.66, 393,168.19 and 188,233.41 is: 259,648.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,028.66 : 393,168.19 = 188,233.41 : x
  2. Step 2: Convert to fraction form
    285,028.66/393,168.19 = 188,233.41/x
  3. Step 3: Cross multiply
    285,028.66x = 393,168.19 × 188,233.41
  4. Step 4: Simplify right side
    285,028.66x = 74,007,388,636.64
  5. Step 5: Solve for x
    x = 74,007,388,636.64/285,028.66
  6. Step 6: Final answer
    x = 259,648.94

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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.