Home / 286,135.23-394,907.76-171,418.78

Finding the Fourth Proportional to 286,135.23, 394,907.76 and 171,418.78

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Solution

The fourth proportional to 286,135.23, 394,907.76 and 171,418.78 is: 236,582.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,135.23 : 394,907.76 = 171,418.78 : x
  2. Step 2: Convert to fraction form
    286,135.23/394,907.76 = 171,418.78/x
  3. Step 3: Cross multiply
    286,135.23x = 394,907.76 × 171,418.78
  4. Step 4: Simplify right side
    286,135.23x = 67,694,605,574.64
  5. Step 5: Solve for x
    x = 67,694,605,574.64/286,135.23
  6. Step 6: Final answer
    x = 236,582.56

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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.