Finding the Fourth Proportional to 212,756.75, 319,162.79 and 77,799.80
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Solution
The fourth proportional to 212,756.75, 319,162.79 and 77,799.80 is: 116,709.82
Step by Step Solution
- Step 1: Write the proportion equation
212,756.75 : 319,162.79 = 77,799.80 : x - Step 2: Convert to fraction form
212,756.75/319,162.79 = 77,799.80/x - Step 3: Cross multiply
212,756.75x = 319,162.79 × 77,799.80 - Step 4: Simplify right side
212,756.75x = 24,830,801,229.44 - Step 5: Solve for x
x = 24,830,801,229.44/212,756.75 - Step 6: Final answer
x = 116,709.82
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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.