Finding the Fourth Proportional to 262,817.40, 394,283.70 and 85,294.20
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Solution
The fourth proportional to 262,817.40, 394,283.70 and 85,294.20 is: 127,959.99
Step by Step Solution
- Step 1: Write the proportion equation
262,817.40 : 394,283.70 = 85,294.20 : x - Step 2: Convert to fraction form
262,817.40/394,283.70 = 85,294.20/x - Step 3: Cross multiply
262,817.40x = 394,283.70 × 85,294.20 - Step 4: Simplify right side
262,817.40x = 33,630,112,764.54 - Step 5: Solve for x
x = 33,630,112,764.54/262,817.40 - Step 6: Final answer
x = 127,959.99
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.