Finding the Fourth Proportional to 393,902.08, 543,582.72 and 215,052.80
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Solution
The fourth proportional to 393,902.08, 543,582.72 and 215,052.80 is: 296,771.69
Step by Step Solution
- Step 1: Write the proportion equation
393,902.08 : 543,582.72 = 215,052.80 : x - Step 2: Convert to fraction form
393,902.08/543,582.72 = 215,052.80/x - Step 3: Cross multiply
393,902.08x = 543,582.72 × 215,052.80 - Step 4: Simplify right side
393,902.08x = 116,898,985,967.62 - Step 5: Solve for x
x = 116,898,985,967.62/393,902.08 - Step 6: Final answer
x = 296,771.69
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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.