Finding the Fourth Proportional to 305,979.14, 422,115.37 and 203,905.17
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Solution
The fourth proportional to 305,979.14, 422,115.37 and 203,905.17 is: 281,298.60
Step by Step Solution
- Step 1: Write the proportion equation
305,979.14 : 422,115.37 = 203,905.17 : x - Step 2: Convert to fraction form
305,979.14/422,115.37 = 203,905.17/x - Step 3: Cross multiply
305,979.14x = 422,115.37 × 203,905.17 - Step 4: Simplify right side
305,979.14x = 86,071,505,769.70 - Step 5: Solve for x
x = 86,071,505,769.70/305,979.14 - Step 6: Final answer
x = 281,298.60
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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.