Finding the Fourth Proportional to 208,093,272.60, 311,803,985.70 and 131,278,834.20
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Solution
The fourth proportional to 208,093,272.60, 311,803,985.70 and 131,278,834.20 is: 196,706,328.99
Step by Step Solution
- Step 1: Write the proportion equation
208,093,272.60 : 311,803,985.70 = 131,278,834.20 : x - Step 2: Convert to fraction form
208,093,272.60/311,803,985.70 = 131,278,834.20/x - Step 3: Cross multiply
208,093,272.60x = 311,803,985.70 × 131,278,834.20 - Step 4: Simplify right side
208,093,272.60x = 40,933,263,741,609,472 - Step 5: Solve for x
x = 40,933,263,741,609,472/208,093,272.60 - Step 6: Final answer
x = 196,706,328.99
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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.