Finding the Fourth Proportional to 290,485.77, 435,750.39 and 80,121.75
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Solution
The fourth proportional to 290,485.77, 435,750.39 and 80,121.75 is: 120,188.62
Step by Step Solution
- Step 1: Write the proportion equation
290,485.77 : 435,750.39 = 80,121.75 : x - Step 2: Convert to fraction form
290,485.77/435,750.39 = 80,121.75/x - Step 3: Cross multiply
290,485.77x = 435,750.39 × 80,121.75 - Step 4: Simplify right side
290,485.77x = 34,913,083,809.98 - Step 5: Solve for x
x = 34,913,083,809.98/290,485.77 - Step 6: Final answer
x = 120,188.62
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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.