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Finding the Fourth Proportional to 248,608.80, 342,945.36 and 147,987.36

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Solution

The fourth proportional to 248,608.80, 342,945.36 and 147,987.36 is: 204,142.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,608.80 : 342,945.36 = 147,987.36 : x
  2. Step 2: Convert to fraction form
    248,608.80/342,945.36 = 147,987.36/x
  3. Step 3: Cross multiply
    248,608.80x = 342,945.36 × 147,987.36
  4. Step 4: Simplify right side
    248,608.80x = 50,751,578,450.65
  5. Step 5: Solve for x
    x = 50,751,578,450.65/248,608.80
  6. Step 6: Final answer
    x = 204,142.33

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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.