Finding the Fourth Proportional to 253,713.30, 350,120.40 and 138,990.99
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Solution
The fourth proportional to 253,713.30, 350,120.40 and 138,990.99 is: 191,805.40
Step by Step Solution
- Step 1: Write the proportion equation
253,713.30 : 350,120.40 = 138,990.99 : x - Step 2: Convert to fraction form
253,713.30/350,120.40 = 138,990.99/x - Step 3: Cross multiply
253,713.30x = 350,120.40 × 138,990.99 - Step 4: Simplify right side
253,713.30x = 48,663,581,015.20 - Step 5: Solve for x
x = 48,663,581,015.20/253,713.30 - Step 6: Final answer
x = 191,805.40
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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.