Home / 209,436,227.87-289,024,002.38-115,352,507.79

Finding the Fourth Proportional to 209,436,227.87, 289,024,002.38 and 115,352,507.79

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Solution

The fourth proportional to 209,436,227.87, 289,024,002.38 and 115,352,507.79 is: 159,187,566.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,436,227.87 : 289,024,002.38 = 115,352,507.79 : x
  2. Step 2: Convert to fraction form
    209,436,227.87/289,024,002.38 = 115,352,507.79/x
  3. Step 3: Cross multiply
    209,436,227.87x = 289,024,002.38 × 115,352,507.79
  4. Step 4: Simplify right side
    209,436,227.87x = 33,339,643,485,459,168
  5. Step 5: Solve for x
    x = 33,339,643,485,459,168/209,436,227.87
  6. Step 6: Final answer
    x = 159,187,566.67

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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.