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Finding the Fourth Proportional to 281,949.36, 388,983.36 and 179,978.64

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Solution

The fourth proportional to 281,949.36, 388,983.36 and 179,978.64 is: 248,302.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,949.36 : 388,983.36 = 179,978.64 : x
  2. Step 2: Convert to fraction form
    281,949.36/388,983.36 = 179,978.64/x
  3. Step 3: Cross multiply
    281,949.36x = 388,983.36 × 179,978.64
  4. Step 4: Simplify right side
    281,949.36x = 70,008,696,115.43
  5. Step 5: Solve for x
    x = 70,008,696,115.43/281,949.36
  6. Step 6: Final answer
    x = 248,302.38

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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.