Finding the Fourth Proportional to 186,780,287.80, 280,170,431.70 and 100,686,845.80
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Solution
The fourth proportional to 186,780,287.80, 280,170,431.70 and 100,686,845.80 is: 151,030,268.70
Step by Step Solution
- Step 1: Write the proportion equation
186,780,287.80 : 280,170,431.70 = 100,686,845.80 : x - Step 2: Convert to fraction form
186,780,287.80/280,170,431.70 = 100,686,845.80/x - Step 3: Cross multiply
186,780,287.80x = 280,170,431.70 × 100,686,845.80 - Step 4: Simplify right side
186,780,287.80x = 28,209,477,054,297,328 - Step 5: Solve for x
x = 28,209,477,054,297,328/186,780,287.80 - Step 6: Final answer
x = 151,030,268.70
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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.