Finding the Fourth Proportional to 209,893,047.84, 289,745,285.04 and 135,589,836.96
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Solution
The fourth proportional to 209,893,047.84, 289,745,285.04 and 135,589,836.96 is: 187,173,974.38
Step by Step Solution
- Step 1: Write the proportion equation
209,893,047.84 : 289,745,285.04 = 135,589,836.96 : x - Step 2: Convert to fraction form
209,893,047.84/289,745,285.04 = 135,589,836.96/x - Step 3: Cross multiply
209,893,047.84x = 289,745,285.04 × 135,589,836.96 - Step 4: Simplify right side
209,893,047.84x = 39,286,515,958,502,336 - Step 5: Solve for x
x = 39,286,515,958,502,336/209,893,047.84 - Step 6: Final answer
x = 187,173,974.38
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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.