Finding the Fourth Proportional to 209,208.96, 313,900.84 and 90,979.68
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Solution
The fourth proportional to 209,208.96, 313,900.84 and 90,979.68 is: 136,507.53
Step by Step Solution
- Step 1: Write the proportion equation
209,208.96 : 313,900.84 = 90,979.68 : x - Step 2: Convert to fraction form
209,208.96/313,900.84 = 90,979.68/x - Step 3: Cross multiply
209,208.96x = 313,900.84 × 90,979.68 - Step 4: Simplify right side
209,208.96x = 28,558,597,974.93 - Step 5: Solve for x
x = 28,558,597,974.93/209,208.96 - Step 6: Final answer
x = 136,507.53
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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.