Finding the Fourth Proportional to 209,953,786.20, 314,930,679.30 and 190,806,163.80
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Solution
The fourth proportional to 209,953,786.20, 314,930,679.30 and 190,806,163.80 is: 286,209,245.70
Step by Step Solution
- Step 1: Write the proportion equation
209,953,786.20 : 314,930,679.30 = 190,806,163.80 : x - Step 2: Convert to fraction form
209,953,786.20/314,930,679.30 = 190,806,163.80/x - Step 3: Cross multiply
209,953,786.20x = 314,930,679.30 × 190,806,163.80 - Step 4: Simplify right side
209,953,786.20x = 60,090,714,780,161,072 - Step 5: Solve for x
x = 60,090,714,780,161,072/209,953,786.20 - Step 6: Final answer
x = 286,209,245.70
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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.