Home / 280,510,542.90-387,086,102.64-161,413,912.71

Finding the Fourth Proportional to 280,510,542.90, 387,086,102.64 and 161,413,912.71

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Solution

The fourth proportional to 280,510,542.90, 387,086,102.64 and 161,413,912.71 is: 222,740,584.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,510,542.90 : 387,086,102.64 = 161,413,912.71 : x
  2. Step 2: Convert to fraction form
    280,510,542.90/387,086,102.64 = 161,413,912.71/x
  3. Step 3: Cross multiply
    280,510,542.90x = 387,086,102.64 × 161,413,912.71
  4. Step 4: Simplify right side
    280,510,542.90x = 62,481,082,382,787,064
  5. Step 5: Solve for x
    x = 62,481,082,382,787,064/280,510,542.90
  6. Step 6: Final answer
    x = 222,740,584.85

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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.