Finding the Fourth Proportional to 239,343.40, 330,190.05 and 142,493.05
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Solution
The fourth proportional to 239,343.40, 330,190.05 and 142,493.05 is: 196,578.59
Step by Step Solution
- Step 1: Write the proportion equation
239,343.40 : 330,190.05 = 142,493.05 : x - Step 2: Convert to fraction form
239,343.40/330,190.05 = 142,493.05/x - Step 3: Cross multiply
239,343.40x = 330,190.05 × 142,493.05 - Step 4: Simplify right side
239,343.40x = 47,049,787,304.15 - Step 5: Solve for x
x = 47,049,787,304.15/239,343.40 - Step 6: Final answer
x = 196,578.59
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.