Finding the Fourth Proportional to 209,219,729.67, 288,725,882.87 and 115,144,708.19
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Solution
The fourth proportional to 209,219,729.67, 288,725,882.87 and 115,144,708.19 is: 158,901,158.99
Step by Step Solution
- Step 1: Write the proportion equation
209,219,729.67 : 288,725,882.87 = 115,144,708.19 : x - Step 2: Convert to fraction form
209,219,729.67/288,725,882.87 = 115,144,708.19/x - Step 3: Cross multiply
209,219,729.67x = 288,725,882.87 × 115,144,708.19 - Step 4: Simplify right side
209,219,729.67x = 33,245,257,528,810,504 - Step 5: Solve for x
x = 33,245,257,528,810,504/209,219,729.67 - Step 6: Final answer
x = 158,901,158.99
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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.