Home / 279,278,589.87-385,404,450.57-161,872,020.45

Finding the Fourth Proportional to 279,278,589.87, 385,404,450.57 and 161,872,020.45

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Solution

The fourth proportional to 279,278,589.87, 385,404,450.57 and 161,872,020.45 is: 223,383,386.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,278,589.87 : 385,404,450.57 = 161,872,020.45 : x
  2. Step 2: Convert to fraction form
    279,278,589.87/385,404,450.57 = 161,872,020.45/x
  3. Step 3: Cross multiply
    279,278,589.87x = 385,404,450.57 × 161,872,020.45
  4. Step 4: Simplify right side
    279,278,589.87x = 62,386,197,104,188,048
  5. Step 5: Solve for x
    x = 62,386,197,104,188,048/279,278,589.87
  6. Step 6: Final answer
    x = 223,383,386.22

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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.