Finding the Fourth Proportional to 209,892,665.25, 289,744,757.24 and 135,589,455.09
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Solution
The fourth proportional to 209,892,665.25, 289,744,757.24 and 135,589,455.09 is: 187,173,447.45
Step by Step Solution
- Step 1: Write the proportion equation
209,892,665.25 : 289,744,757.24 = 135,589,455.09 : x - Step 2: Convert to fraction form
209,892,665.25/289,744,757.24 = 135,589,455.09/x - Step 3: Cross multiply
209,892,665.25x = 289,744,757.24 × 135,589,455.09 - Step 4: Simplify right side
209,892,665.25x = 39,286,333,748,677,992 - Step 5: Solve for x
x = 39,286,333,748,677,992/209,892,665.25 - Step 6: Final answer
x = 187,173,447.45
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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.