Finding the Fourth Proportional to 290,982.15, 401,551.49 and 163,657.74
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Solution
The fourth proportional to 290,982.15, 401,551.49 and 163,657.74 is: 225,845.50
Step by Step Solution
- Step 1: Write the proportion equation
290,982.15 : 401,551.49 = 163,657.74 : x - Step 2: Convert to fraction form
290,982.15/401,551.49 = 163,657.74/x - Step 3: Cross multiply
290,982.15x = 401,551.49 × 163,657.74 - Step 4: Simplify right side
290,982.15x = 65,717,008,752.30 - Step 5: Solve for x
x = 65,717,008,752.30/290,982.15 - Step 6: Final answer
x = 225,845.50
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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.