Finding the Fourth Proportional to 209,988.91, 289,808.94 and 116,864.05
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Solution
The fourth proportional to 209,988.91, 289,808.94 and 116,864.05 is: 161,285.89
Step by Step Solution
- Step 1: Write the proportion equation
209,988.91 : 289,808.94 = 116,864.05 : x - Step 2: Convert to fraction form
209,988.91/289,808.94 = 116,864.05/x - Step 3: Cross multiply
209,988.91x = 289,808.94 × 116,864.05 - Step 4: Simplify right side
209,988.91x = 33,868,247,276.99 - Step 5: Solve for x
x = 33,868,247,276.99/209,988.91 - Step 6: Final answer
x = 161,285.89
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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.