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Finding the Fourth Proportional to 290,745.45, 436,112.67 and 158,467.48

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Solution

The fourth proportional to 290,745.45, 436,112.67 and 158,467.48 is: 237,698.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,745.45 : 436,112.67 = 158,467.48 : x
  2. Step 2: Convert to fraction form
    290,745.45/436,112.67 = 158,467.48/x
  3. Step 3: Cross multiply
    290,745.45x = 436,112.67 × 158,467.48
  4. Step 4: Simplify right side
    290,745.45x = 69,109,675,810.97
  5. Step 5: Solve for x
    x = 69,109,675,810.97/290,745.45
  6. Step 6: Final answer
    x = 237,698.22

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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.