Finding the Fourth Proportional to 398,715.73, 550,227.81 and 217,423.00
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Solution
The fourth proportional to 398,715.73, 550,227.81 and 217,423.00 is: 300,043.80
Step by Step Solution
- Step 1: Write the proportion equation
398,715.73 : 550,227.81 = 217,423.00 : x - Step 2: Convert to fraction form
398,715.73/550,227.81 = 217,423.00/x - Step 3: Cross multiply
398,715.73x = 550,227.81 × 217,423.00 - Step 4: Simplify right side
398,715.73x = 119,632,182,025.25 - Step 5: Solve for x
x = 119,632,182,025.25/398,715.73 - Step 6: Final answer
x = 300,043.80
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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.