Finding the Fourth Proportional to 285,309.86, 393,722.79 and 157,982.72
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Solution
The fourth proportional to 285,309.86, 393,722.79 and 157,982.72 is: 218,013.49
Step by Step Solution
- Step 1: Write the proportion equation
285,309.86 : 393,722.79 = 157,982.72 : x - Step 2: Convert to fraction form
285,309.86/393,722.79 = 157,982.72/x - Step 3: Cross multiply
285,309.86x = 393,722.79 × 157,982.72 - Step 4: Simplify right side
285,309.86x = 62,201,397,290.19 - Step 5: Solve for x
x = 62,201,397,290.19/285,309.86 - Step 6: Final answer
x = 218,013.49
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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.