Finding the Fourth Proportional to 209,330.14, 288,940.36 and 155,687.80
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Solution
The fourth proportional to 209,330.14, 288,940.36 and 155,687.80 is: 214,897.33
Step by Step Solution
- Step 1: Write the proportion equation
209,330.14 : 288,940.36 = 155,687.80 : x - Step 2: Convert to fraction form
209,330.14/288,940.36 = 155,687.80/x - Step 3: Cross multiply
209,330.14x = 288,940.36 × 155,687.80 - Step 4: Simplify right side
209,330.14x = 44,984,488,979.61 - Step 5: Solve for x
x = 44,984,488,979.61/209,330.14 - Step 6: Final answer
x = 214,897.33
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1.5x scale
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.