Finding the Fourth Proportional to 393,277.09, 542,726.19 and 223,512.43
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Solution
The fourth proportional to 393,277.09, 542,726.19 and 223,512.43 is: 308,449.32
Step by Step Solution
- Step 1: Write the proportion equation
393,277.09 : 542,726.19 = 223,512.43 : x - Step 2: Convert to fraction form
393,277.09/542,726.19 = 223,512.43/x - Step 3: Cross multiply
393,277.09x = 542,726.19 × 223,512.43 - Step 4: Simplify right side
393,277.09x = 121,306,049,551.54 - Step 5: Solve for x
x = 121,306,049,551.54/393,277.09 - Step 6: Final answer
x = 308,449.32
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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.