Finding the Fourth Proportional to 213,071.48, 319,524.15 and 79,879.07
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Solution
The fourth proportional to 213,071.48, 319,524.15 and 79,879.07 is: 119,787.46
Step by Step Solution
- Step 1: Write the proportion equation
213,071.48 : 319,524.15 = 79,879.07 : x - Step 2: Convert to fraction form
213,071.48/319,524.15 = 79,879.07/x - Step 3: Cross multiply
213,071.48x = 319,524.15 × 79,879.07 - Step 4: Simplify right side
213,071.48x = 25,523,291,944.54 - Step 5: Solve for x
x = 25,523,291,944.54/213,071.48 - Step 6: Final answer
x = 119,787.46
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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.