Home / 290,479,788.56-400,870,509.46-158,329,344.44

Finding the Fourth Proportional to 290,479,788.56, 400,870,509.46 and 158,329,344.44

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Solution

The fourth proportional to 290,479,788.56, 400,870,509.46 and 158,329,344.44 is: 218,499,074.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,479,788.56 : 400,870,509.46 = 158,329,344.44 : x
  2. Step 2: Convert to fraction form
    290,479,788.56/400,870,509.46 = 158,329,344.44/x
  3. Step 3: Cross multiply
    290,479,788.56x = 400,870,509.46 × 158,329,344.44
  4. Step 4: Simplify right side
    290,479,788.56x = 63,469,564,968,736,968
  5. Step 5: Solve for x
    x = 63,469,564,968,736,968/290,479,788.56
  6. Step 6: Final answer
    x = 218,499,074.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.