Finding the Fourth Proportional to 209,988.18, 289,771.14 and 119,331.60
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Solution
The fourth proportional to 209,988.18, 289,771.14 and 119,331.60 is: 164,670.48
Step by Step Solution
- Step 1: Write the proportion equation
209,988.18 : 289,771.14 = 119,331.60 : x - Step 2: Convert to fraction form
209,988.18/289,771.14 = 119,331.60/x - Step 3: Cross multiply
209,988.18x = 289,771.14 × 119,331.60 - Step 4: Simplify right side
209,988.18x = 34,578,853,770.02 - Step 5: Solve for x
x = 34,578,853,770.02/209,988.18 - Step 6: Final answer
x = 164,670.48
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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.