Finding the Fourth Proportional to 206,907.52, 310,515.84 and 80,567.68
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Solution
The fourth proportional to 206,907.52, 310,515.84 and 80,567.68 is: 120,911.70
Step by Step Solution
- Step 1: Write the proportion equation
206,907.52 : 310,515.84 = 80,567.68 : x - Step 2: Convert to fraction form
206,907.52/310,515.84 = 80,567.68/x - Step 3: Cross multiply
206,907.52x = 310,515.84 × 80,567.68 - Step 4: Simplify right side
206,907.52x = 25,017,540,832.05 - Step 5: Solve for x
x = 25,017,540,832.05/206,907.52 - Step 6: Final answer
x = 120,911.70
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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.