Finding the Fourth Proportional to 198,862.40, 274,309.80 and 127,217.36
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Solution
The fourth proportional to 198,862.40, 274,309.80 and 127,217.36 is: 175,482.99
Step by Step Solution
- Step 1: Write the proportion equation
198,862.40 : 274,309.80 = 127,217.36 : x - Step 2: Convert to fraction form
198,862.40/274,309.80 = 127,217.36/x - Step 3: Cross multiply
198,862.40x = 274,309.80 × 127,217.36 - Step 4: Simplify right side
198,862.40x = 34,896,968,578.13 - Step 5: Solve for x
x = 34,896,968,578.13/198,862.40 - Step 6: Final answer
x = 175,482.99
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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.