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Finding the Fourth Proportional to 285,611.88, 394,144.39 and 158,295.67

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Solution

The fourth proportional to 285,611.88, 394,144.39 and 158,295.67 is: 218,448.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,611.88 : 394,144.39 = 158,295.67 : x
  2. Step 2: Convert to fraction form
    285,611.88/394,144.39 = 158,295.67/x
  3. Step 3: Cross multiply
    285,611.88x = 394,144.39 × 158,295.67
  4. Step 4: Simplify right side
    285,611.88x = 62,391,349,896.05
  5. Step 5: Solve for x
    x = 62,391,349,896.05/285,611.88
  6. Step 6: Final answer
    x = 218,448.02

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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.