Home / 285,571.72-394,099.14-172,372.36

Finding the Fourth Proportional to 285,571.72, 394,099.14 and 172,372.36

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Solution

The fourth proportional to 285,571.72, 394,099.14 and 172,372.36 is: 237,879.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,571.72 : 394,099.14 = 172,372.36 : x
  2. Step 2: Convert to fraction form
    285,571.72/394,099.14 = 172,372.36/x
  3. Step 3: Cross multiply
    285,571.72x = 394,099.14 × 172,372.36
  4. Step 4: Simplify right side
    285,571.72x = 67,931,798,835.77
  5. Step 5: Solve for x
    x = 67,931,798,835.77/285,571.72
  6. Step 6: Final answer
    x = 237,879.99

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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.