Finding the Fourth Proportional to 209,087.08, 313,628.70 and 84,426.28
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Solution
The fourth proportional to 209,087.08, 313,628.70 and 84,426.28 is: 126,638.64
Step by Step Solution
- Step 1: Write the proportion equation
209,087.08 : 313,628.70 = 84,426.28 : x - Step 2: Convert to fraction form
209,087.08/313,628.70 = 84,426.28/x - Step 3: Cross multiply
209,087.08x = 313,628.70 × 84,426.28 - Step 4: Simplify right side
209,087.08x = 26,478,504,442.24 - Step 5: Solve for x
x = 26,478,504,442.24/209,087.08 - Step 6: Final answer
x = 126,638.64
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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.