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Finding the Fourth Proportional to 281,578.26, 388,577.98 and 168,401

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Solution

The fourth proportional to 281,578.26, 388,577.98 and 168,401 is: 232,393.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,578.26 : 388,577.98 = 168,401 : x
  2. Step 2: Convert to fraction form
    281,578.26/388,577.98 = 168,401/x
  3. Step 3: Cross multiply
    281,578.26x = 388,577.98 × 168,401
  4. Step 4: Simplify right side
    281,578.26x = 65,436,920,409.98
  5. Step 5: Solve for x
    x = 65,436,920,409.98/281,578.26
  6. Step 6: Final answer
    x = 232,393.37

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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.