Finding the Fourth Proportional to 207,897.10, 311,845.65 and 74,781.70
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Solution
The fourth proportional to 207,897.10, 311,845.65 and 74,781.70 is: 112,172.55
Step by Step Solution
- Step 1: Write the proportion equation
207,897.10 : 311,845.65 = 74,781.70 : x - Step 2: Convert to fraction form
207,897.10/311,845.65 = 74,781.70/x - Step 3: Cross multiply
207,897.10x = 311,845.65 × 74,781.70 - Step 4: Simplify right side
207,897.10x = 23,320,347,844.61 - Step 5: Solve for x
x = 23,320,347,844.61/207,897.10 - Step 6: Final answer
x = 112,172.55
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.