Finding the Fourth Proportional to 285,315.50, 393,747.26 and 157,991.09
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Solution
The fourth proportional to 285,315.50, 393,747.26 and 157,991.09 is: 218,034.27
Step by Step Solution
- Step 1: Write the proportion equation
285,315.50 : 393,747.26 = 157,991.09 : x - Step 2: Convert to fraction form
285,315.50/393,747.26 = 157,991.09/x - Step 3: Cross multiply
285,315.50x = 393,747.26 × 157,991.09 - Step 4: Simplify right side
285,315.50x = 62,208,556,033.22 - Step 5: Solve for x
x = 62,208,556,033.22/285,315.50 - Step 6: Final answer
x = 218,034.27
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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.