Finding the Fourth Proportional to 215,568,203.40, 323,352,305.10 and 79,235,872.20
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Solution
The fourth proportional to 215,568,203.40, 323,352,305.10 and 79,235,872.20 is: 118,853,808.30
Step by Step Solution
- Step 1: Write the proportion equation
215,568,203.40 : 323,352,305.10 = 79,235,872.20 : x - Step 2: Convert to fraction form
215,568,203.40/323,352,305.10 = 79,235,872.20/x - Step 3: Cross multiply
215,568,203.40x = 323,352,305.10 × 79,235,872.20 - Step 4: Simplify right side
215,568,203.40x = 25,621,101,922,479,012 - Step 5: Solve for x
x = 25,621,101,922,479,012/215,568,203.40 - Step 6: Final answer
x = 118,853,808.30
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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.