Finding the Fourth Proportional to 198,943.80, 298,415.70 and 67,615.80
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Solution
The fourth proportional to 198,943.80, 298,415.70 and 67,615.80 is: 101,423.70
Step by Step Solution
- Step 1: Write the proportion equation
198,943.80 : 298,415.70 = 67,615.80 : x - Step 2: Convert to fraction form
198,943.80/298,415.70 = 67,615.80/x - Step 3: Cross multiply
198,943.80x = 298,415.70 × 67,615.80 - Step 4: Simplify right side
198,943.80x = 20,177,616,288.06 - Step 5: Solve for x
x = 20,177,616,288.06/198,943.80 - Step 6: Final answer
x = 101,423.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.