Home / 290,979.20-436,467-74,837.12

Finding the Fourth Proportional to 290,979.20, 436,467 and 74,837.12

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Solution

The fourth proportional to 290,979.20, 436,467 and 74,837.12 is: 112,255.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,979.20 : 436,467 = 74,837.12 : x
  2. Step 2: Convert to fraction form
    290,979.20/436,467 = 74,837.12/x
  3. Step 3: Cross multiply
    290,979.20x = 436,467 × 74,837.12
  4. Step 4: Simplify right side
    290,979.20x = 32,663,933,255.04
  5. Step 5: Solve for x
    x = 32,663,933,255.04/290,979.20
  6. Step 6: Final answer
    x = 112,255.22

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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.