Finding the Fourth Proportional to 379,121.76, 523,186.02 and 209,355.84
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Solution
The fourth proportional to 379,121.76, 523,186.02 and 209,355.84 is: 288,909.95
Step by Step Solution
- Step 1: Write the proportion equation
379,121.76 : 523,186.02 = 209,355.84 : x - Step 2: Convert to fraction form
379,121.76/523,186.02 = 209,355.84/x - Step 3: Cross multiply
379,121.76x = 523,186.02 × 209,355.84 - Step 4: Simplify right side
379,121.76x = 109,532,048,693.36 - Step 5: Solve for x
x = 109,532,048,693.36/379,121.76 - Step 6: Final answer
x = 288,909.95
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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.