Finding the Fourth Proportional to 285,798.74, 394,422.09 and 158,486.18
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Solution
The fourth proportional to 285,798.74, 394,422.09 and 158,486.18 is: 218,721.92
Step by Step Solution
- Step 1: Write the proportion equation
285,798.74 : 394,422.09 = 158,486.18 : x - Step 2: Convert to fraction form
285,798.74/394,422.09 = 158,486.18/x - Step 3: Cross multiply
285,798.74x = 394,422.09 × 158,486.18 - Step 4: Simplify right side
285,798.74x = 62,510,450,351.72 - Step 5: Solve for x
x = 62,510,450,351.72/285,798.74 - Step 6: Final answer
x = 218,721.92
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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.