Finding the Fourth Proportional to 285,428.24, 393,891.36 and 158,103.44
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Solution
The fourth proportional to 285,428.24, 393,891.36 and 158,103.44 is: 218,182.96
Step by Step Solution
- Step 1: Write the proportion equation
285,428.24 : 393,891.36 = 158,103.44 : x - Step 2: Convert to fraction form
285,428.24/393,891.36 = 158,103.44/x - Step 3: Cross multiply
285,428.24x = 393,891.36 × 158,103.44 - Step 4: Simplify right side
285,428.24x = 62,275,579,002.28 - Step 5: Solve for x
x = 62,275,579,002.28/285,428.24 - Step 6: Final answer
x = 218,182.96
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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.