Finding the Fourth Proportional to 208,391.30, 312,254.79 and 133,449.80
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Solution
The fourth proportional to 208,391.30, 312,254.79 and 133,449.80 is: 199,961.99
Step by Step Solution
- Step 1: Write the proportion equation
208,391.30 : 312,254.79 = 133,449.80 : x - Step 2: Convert to fraction form
208,391.30/312,254.79 = 133,449.80/x - Step 3: Cross multiply
208,391.30x = 312,254.79 × 133,449.80 - Step 4: Simplify right side
208,391.30x = 41,670,337,713.27 - Step 5: Solve for x
x = 41,670,337,713.27/208,391.30 - Step 6: Final answer
x = 199,961.99
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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.