Finding the Fourth Proportional to 318,881.76, 440,040.18 and 198,020.49
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Solution
The fourth proportional to 318,881.76, 440,040.18 and 198,020.49 is: 273,257.94
Step by Step Solution
- Step 1: Write the proportion equation
318,881.76 : 440,040.18 = 198,020.49 : x - Step 2: Convert to fraction form
318,881.76/440,040.18 = 198,020.49/x - Step 3: Cross multiply
318,881.76x = 440,040.18 × 198,020.49 - Step 4: Simplify right side
318,881.76x = 87,136,972,063.29 - Step 5: Solve for x
x = 87,136,972,063.29/318,881.76 - Step 6: Final answer
x = 273,257.94
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1.5x scale
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.