Finding the Fourth Proportional to 393,436.44, 542,988.36 and 223,696.08
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Solution
The fourth proportional to 393,436.44, 542,988.36 and 223,696.08 is: 308,726.79
Step by Step Solution
- Step 1: Write the proportion equation
393,436.44 : 542,988.36 = 223,696.08 : x - Step 2: Convert to fraction form
393,436.44/542,988.36 = 223,696.08/x - Step 3: Cross multiply
393,436.44x = 542,988.36 × 223,696.08 - Step 4: Simplify right side
393,436.44x = 121,464,367,617.63 - Step 5: Solve for x
x = 121,464,367,617.63/393,436.44 - Step 6: Final answer
x = 308,726.79
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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.