Finding the Fourth Proportional to 318,489,093.48, 439,288,550.73 and 212,589,115.95
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Solution
The fourth proportional to 318,489,093.48, 439,288,550.73 and 212,589,115.95 is: 293,221,860.84
Step by Step Solution
- Step 1: Write the proportion equation
318,489,093.48 : 439,288,550.73 = 212,589,115.95 : x - Step 2: Convert to fraction form
318,489,093.48/439,288,550.73 = 212,589,115.95/x - Step 3: Cross multiply
318,489,093.48x = 439,288,550.73 × 212,589,115.95 - Step 4: Simplify right side
318,489,093.48x = 93,387,964,646,647,424 - Step 5: Solve for x
x = 93,387,964,646,647,424/318,489,093.48 - Step 6: Final answer
x = 293,221,860.84
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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.