Finding the Fourth Proportional to 280,375.30, 386,912.94 and 159,513.99
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Solution
The fourth proportional to 280,375.30, 386,912.94 and 159,513.99 is: 220,126.47
Step by Step Solution
- Step 1: Write the proportion equation
280,375.30 : 386,912.94 = 159,513.99 : x - Step 2: Convert to fraction form
280,375.30/386,912.94 = 159,513.99/x - Step 3: Cross multiply
280,375.30x = 386,912.94 × 159,513.99 - Step 4: Simplify right side
280,375.30x = 61,718,024,907.47 - Step 5: Solve for x
x = 61,718,024,907.47/280,375.30 - Step 6: Final answer
x = 220,126.47
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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.