Finding the Fourth Proportional to 212,646.09, 318,910.80 and 79,482.09
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Solution
The fourth proportional to 212,646.09, 318,910.80 and 79,482.09 is: 119,201.33
Step by Step Solution
- Step 1: Write the proportion equation
212,646.09 : 318,910.80 = 79,482.09 : x - Step 2: Convert to fraction form
212,646.09/318,910.80 = 79,482.09/x - Step 3: Cross multiply
212,646.09x = 318,910.80 × 79,482.09 - Step 4: Simplify right side
212,646.09x = 25,347,696,907.57 - Step 5: Solve for x
x = 25,347,696,907.57/212,646.09 - Step 6: Final answer
x = 119,201.33
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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.