Finding the Fourth Proportional to 291,042,115.44, 434,335,782.84 and 259,987,951.08
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Solution
The fourth proportional to 291,042,115.44, 434,335,782.84 and 259,987,951.08 is: 387,992,198.62
Step by Step Solution
- Step 1: Write the proportion equation
291,042,115.44 : 434,335,782.84 = 259,987,951.08 : x - Step 2: Convert to fraction form
291,042,115.44/434,335,782.84 = 259,987,951.08/x - Step 3: Cross multiply
291,042,115.44x = 434,335,782.84 × 259,987,951.08 - Step 4: Simplify right side
291,042,115.44x = 112,922,070,261,299,424 - Step 5: Solve for x
x = 112,922,070,261,299,424/291,042,115.44 - Step 6: Final answer
x = 387,992,198.62
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.