Finding the Fourth Proportional to 286,839.09, 395,821.69 and 159,511.95
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Solution
The fourth proportional to 286,839.09, 395,821.69 and 159,511.95 is: 220,117.45
Step by Step Solution
- Step 1: Write the proportion equation
286,839.09 : 395,821.69 = 159,511.95 : x - Step 2: Convert to fraction form
286,839.09/395,821.69 = 159,511.95/x - Step 3: Cross multiply
286,839.09x = 395,821.69 × 159,511.95 - Step 4: Simplify right side
286,839.09x = 63,138,289,225.42 - Step 5: Solve for x
x = 63,138,289,225.42/286,839.09 - Step 6: Final answer
x = 220,117.45
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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.