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Finding the Fourth Proportional to 290,745.18, 436,112.30 and 158,467.22

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Solution

The fourth proportional to 290,745.18, 436,112.30 and 158,467.22 is: 237,697.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,745.18 : 436,112.30 = 158,467.22 : x
  2. Step 2: Convert to fraction form
    290,745.18/436,112.30 = 158,467.22/x
  3. Step 3: Cross multiply
    290,745.18x = 436,112.30 × 158,467.22
  4. Step 4: Simplify right side
    290,745.18x = 69,109,503,788.81
  5. Step 5: Solve for x
    x = 69,109,503,788.81/290,745.18
  6. Step 6: Final answer
    x = 237,697.85

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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.