Home / 258,949.72-388,477.84-109,190.44

Finding the Fourth Proportional to 258,949.72, 388,477.84 and 109,190.44

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Solution

The fourth proportional to 258,949.72, 388,477.84 and 109,190.44 is: 163,808.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,949.72 : 388,477.84 = 109,190.44 : x
  2. Step 2: Convert to fraction form
    258,949.72/388,477.84 = 109,190.44/x
  3. Step 3: Cross multiply
    258,949.72x = 388,477.84 × 109,190.44
  4. Step 4: Simplify right side
    258,949.72x = 42,418,066,279.85
  5. Step 5: Solve for x
    x = 42,418,066,279.85/258,949.72
  6. Step 6: Final answer
    x = 163,808.12

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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.