Home / 277,721.61-383,147.31-161,415.75

Finding the Fourth Proportional to 277,721.61, 383,147.31 and 161,415.75

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Solution

The fourth proportional to 277,721.61, 383,147.31 and 161,415.75 is: 222,690.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    277,721.61 : 383,147.31 = 161,415.75 : x
  2. Step 2: Convert to fraction form
    277,721.61/383,147.31 = 161,415.75/x
  3. Step 3: Cross multiply
    277,721.61x = 383,147.31 × 161,415.75
  4. Step 4: Simplify right side
    277,721.61x = 61,846,010,404.13
  5. Step 5: Solve for x
    x = 61,846,010,404.13/277,721.61
  6. Step 6: Final answer
    x = 222,690.67

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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.