Finding the Fourth Proportional to 285,805.74, 394,383.49 and 164,985.95
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Solution
The fourth proportional to 285,805.74, 394,383.49 and 164,985.95 is: 227,664.19
Step by Step Solution
- Step 1: Write the proportion equation
285,805.74 : 394,383.49 = 164,985.95 : x - Step 2: Convert to fraction form
285,805.74/394,383.49 = 164,985.95/x - Step 3: Cross multiply
285,805.74x = 394,383.49 × 164,985.95 - Step 4: Simplify right side
285,805.74x = 65,067,733,117.05 - Step 5: Solve for x
x = 65,067,733,117.05/285,805.74 - Step 6: Final answer
x = 227,664.19
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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.