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Finding the Fourth Proportional to 285,858.36, 394,497 and 158,525.28

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Solution

The fourth proportional to 285,858.36, 394,497 and 158,525.28 is: 218,771.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,858.36 : 394,497 = 158,525.28 : x
  2. Step 2: Convert to fraction form
    285,858.36/394,497 = 158,525.28/x
  3. Step 3: Cross multiply
    285,858.36x = 394,497 × 158,525.28
  4. Step 4: Simplify right side
    285,858.36x = 62,537,747,384.16
  5. Step 5: Solve for x
    x = 62,537,747,384.16/285,858.36
  6. Step 6: Final answer
    x = 218,771.80

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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.