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Finding the Fourth Proportional to 285,902.66, 394,592.92 and 158,619.26

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Solution

The fourth proportional to 285,902.66, 394,592.92 and 158,619.26 is: 218,920.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,902.66 : 394,592.92 = 158,619.26 : x
  2. Step 2: Convert to fraction form
    285,902.66/394,592.92 = 158,619.26/x
  3. Step 3: Cross multiply
    285,902.66x = 394,592.92 × 158,619.26
  4. Step 4: Simplify right side
    285,902.66x = 62,590,036,971.64
  5. Step 5: Solve for x
    x = 62,590,036,971.64/285,902.66
  6. Step 6: Final answer
    x = 218,920.79

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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.