Home / 290,774,682.20-436,162,023.30-209,145,344.60

Finding the Fourth Proportional to 290,774,682.20, 436,162,023.30 and 209,145,344.60

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Solution

The fourth proportional to 290,774,682.20, 436,162,023.30 and 209,145,344.60 is: 313,718,016.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,774,682.20 : 436,162,023.30 = 209,145,344.60 : x
  2. Step 2: Convert to fraction form
    290,774,682.20/436,162,023.30 = 209,145,344.60/x
  3. Step 3: Cross multiply
    290,774,682.20x = 436,162,023.30 × 209,145,344.60
  4. Step 4: Simplify right side
    290,774,682.20x = 91,221,256,664,511,728
  5. Step 5: Solve for x
    x = 91,221,256,664,511,728/290,774,682.20
  6. Step 6: Final answer
    x = 313,718,016.90

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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.