Finding the Fourth Proportional to 281,136.24, 388,128.42 and 185,919.12
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Solution
The fourth proportional to 281,136.24, 388,128.42 and 185,919.12 is: 256,674.47
Step by Step Solution
- Step 1: Write the proportion equation
281,136.24 : 388,128.42 = 185,919.12 : x - Step 2: Convert to fraction form
281,136.24/388,128.42 = 185,919.12/x - Step 3: Cross multiply
281,136.24x = 388,128.42 × 185,919.12 - Step 4: Simplify right side
281,136.24x = 72,160,494,293.39 - Step 5: Solve for x
x = 72,160,494,293.39/281,136.24 - Step 6: Final answer
x = 256,674.47
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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.