Finding the Fourth Proportional to 209,079,858.42, 288,566,319.27 and 121,022,408.40
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Solution
The fourth proportional to 209,079,858.42, 288,566,319.27 and 121,022,408.40 is: 167,031,827.96
Step by Step Solution
- Step 1: Write the proportion equation
209,079,858.42 : 288,566,319.27 = 121,022,408.40 : x - Step 2: Convert to fraction form
209,079,858.42/288,566,319.27 = 121,022,408.40/x - Step 3: Cross multiply
209,079,858.42x = 288,566,319.27 × 121,022,408.40 - Step 4: Simplify right side
209,079,858.42x = 34,922,990,941,178,728 - Step 5: Solve for x
x = 34,922,990,941,178,728/209,079,858.42 - Step 6: Final answer
x = 167,031,827.96
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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.