Finding the Fourth Proportional to 312,476.18, 431,214.98 and 169,232.94
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Solution
The fourth proportional to 312,476.18, 431,214.98 and 169,232.94 is: 233,540.29
Step by Step Solution
- Step 1: Write the proportion equation
312,476.18 : 431,214.98 = 169,232.94 : x - Step 2: Convert to fraction form
312,476.18/431,214.98 = 169,232.94/x - Step 3: Cross multiply
312,476.18x = 431,214.98 × 169,232.94 - Step 4: Simplify right side
312,476.18x = 72,975,777,991.28 - Step 5: Solve for x
x = 72,975,777,991.28/312,476.18 - Step 6: Final answer
x = 233,540.29
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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.