Home / 258,828.98-388,295.96-109,069.20

Finding the Fourth Proportional to 258,828.98, 388,295.96 and 109,069.20

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Solution

The fourth proportional to 258,828.98, 388,295.96 and 109,069.20 is: 163,625.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,828.98 : 388,295.96 = 109,069.20 : x
  2. Step 2: Convert to fraction form
    258,828.98/388,295.96 = 109,069.20/x
  3. Step 3: Cross multiply
    258,828.98x = 388,295.96 × 109,069.20
  4. Step 4: Simplify right side
    258,828.98x = 42,351,129,175.09
  5. Step 5: Solve for x
    x = 42,351,129,175.09/258,828.98
  6. Step 6: Final answer
    x = 163,625.92

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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.