Home / 283,578.57-391,075.40-206,976.31

Finding the Fourth Proportional to 283,578.57, 391,075.40 and 206,976.31

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Solution

The fourth proportional to 283,578.57, 391,075.40 and 206,976.31 is: 285,435.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,578.57 : 391,075.40 = 206,976.31 : x
  2. Step 2: Convert to fraction form
    283,578.57/391,075.40 = 206,976.31/x
  3. Step 3: Cross multiply
    283,578.57x = 391,075.40 × 206,976.31
  4. Step 4: Simplify right side
    283,578.57x = 80,943,343,223.77
  5. Step 5: Solve for x
    x = 80,943,343,223.77/283,578.57
  6. Step 6: Final answer
    x = 285,435.33

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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.