Finding the Fourth Proportional to 208,458.20, 287,674.08 and 122,394.80
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Solution
The fourth proportional to 208,458.20, 287,674.08 and 122,394.80 is: 168,905.86
Step by Step Solution
- Step 1: Write the proportion equation
208,458.20 : 287,674.08 = 122,394.80 : x - Step 2: Convert to fraction form
208,458.20/287,674.08 = 122,394.80/x - Step 3: Cross multiply
208,458.20x = 287,674.08 × 122,394.80 - Step 4: Simplify right side
208,458.20x = 35,209,811,486.78 - Step 5: Solve for x
x = 35,209,811,486.78/208,458.20 - Step 6: Final answer
x = 168,905.86
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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.