Finding the Fourth Proportional to 281,279.08, 421,864.86 and 84,287.08
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Solution
The fourth proportional to 281,279.08, 421,864.86 and 84,287.08 is: 126,414.51
Step by Step Solution
- Step 1: Write the proportion equation
281,279.08 : 421,864.86 = 84,287.08 : x - Step 2: Convert to fraction form
281,279.08/421,864.86 = 84,287.08/x - Step 3: Cross multiply
281,279.08x = 421,864.86 × 84,287.08 - Step 4: Simplify right side
281,279.08x = 35,557,757,204.01 - Step 5: Solve for x
x = 35,557,757,204.01/281,279.08 - Step 6: Final answer
x = 126,414.51
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1.5x scale
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.