Finding the Fourth Proportional to 318,489,255.44, 439,288,765.64 and 212,589,275.96
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Solution
The fourth proportional to 318,489,255.44, 439,288,765.64 and 212,589,275.96 is: 293,222,075.88
Step by Step Solution
- Step 1: Write the proportion equation
318,489,255.44 : 439,288,765.64 = 212,589,275.96 : x - Step 2: Convert to fraction form
318,489,255.44/439,288,765.64 = 212,589,275.96/x - Step 3: Cross multiply
318,489,255.44x = 439,288,765.64 × 212,589,275.96 - Step 4: Simplify right side
318,489,255.44x = 93,388,080,626,794,848 - Step 5: Solve for x
x = 93,388,080,626,794,848/318,489,255.44 - Step 6: Final answer
x = 293,222,075.88
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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.