Home / 290,976.24-436,540.32-91,302.96

Finding the Fourth Proportional to 290,976.24, 436,540.32 and 91,302.96

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Solution

The fourth proportional to 290,976.24, 436,540.32 and 91,302.96 is: 136,978.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,976.24 : 436,540.32 = 91,302.96 : x
  2. Step 2: Convert to fraction form
    290,976.24/436,540.32 = 91,302.96/x
  3. Step 3: Cross multiply
    290,976.24x = 436,540.32 × 91,302.96
  4. Step 4: Simplify right side
    290,976.24x = 39,857,423,375.35
  5. Step 5: Solve for x
    x = 39,857,423,375.35/290,976.24
  6. Step 6: Final answer
    x = 136,978.27

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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.