Finding the Fourth Proportional to 243,212,826.12, 335,657,704.83 and 138,806,517.75
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Solution
The fourth proportional to 243,212,826.12, 335,657,704.83 and 138,806,517.75 is: 191,566,694.51
Step by Step Solution
- Step 1: Write the proportion equation
243,212,826.12 : 335,657,704.83 = 138,806,517.75 : x - Step 2: Convert to fraction form
243,212,826.12/335,657,704.83 = 138,806,517.75/x - Step 3: Cross multiply
243,212,826.12x = 335,657,704.83 × 138,806,517.75 - Step 4: Simplify right side
243,212,826.12x = 46,591,477,163,409,656 - Step 5: Solve for x
x = 46,591,477,163,409,656/243,212,826.12 - Step 6: Final answer
x = 191,566,694.51
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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.