Home / 288,455.84-398,067.36-161,131.04

Finding the Fourth Proportional to 288,455.84, 398,067.36 and 161,131.04

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Solution

The fourth proportional to 288,455.84, 398,067.36 and 161,131.04 is: 222,359.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,455.84 : 398,067.36 = 161,131.04 : x
  2. Step 2: Convert to fraction form
    288,455.84/398,067.36 = 161,131.04/x
  3. Step 3: Cross multiply
    288,455.84x = 398,067.36 × 161,131.04
  4. Step 4: Simplify right side
    288,455.84x = 64,141,007,706.85
  5. Step 5: Solve for x
    x = 64,141,007,706.85/288,455.84
  6. Step 6: Final answer
    x = 222,359.89

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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.