Finding the Fourth Proportional to 221,912,405.07, 306,164,950.23 and 129,073,205.31
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Solution
The fourth proportional to 221,912,405.07, 306,164,950.23 and 129,073,205.31 is: 178,077,883.78
Step by Step Solution
- Step 1: Write the proportion equation
221,912,405.07 : 306,164,950.23 = 129,073,205.31 : x - Step 2: Convert to fraction form
221,912,405.07/306,164,950.23 = 129,073,205.31/x - Step 3: Cross multiply
221,912,405.07x = 306,164,950.23 × 129,073,205.31 - Step 4: Simplify right side
221,912,405.07x = 39,517,691,479,762,728 - Step 5: Solve for x
x = 39,517,691,479,762,728/221,912,405.07 - Step 6: Final answer
x = 178,077,883.78
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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.