Finding the Fourth Proportional to 290,809.20, 401,317.36 and 163,485.84
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Solution
The fourth proportional to 290,809.20, 401,317.36 and 163,485.84 is: 225,610.83
Step by Step Solution
- Step 1: Write the proportion equation
290,809.20 : 401,317.36 = 163,485.84 : x - Step 2: Convert to fraction form
290,809.20/401,317.36 = 163,485.84/x - Step 3: Cross multiply
290,809.20x = 401,317.36 × 163,485.84 - Step 4: Simplify right side
290,809.20x = 65,609,705,706.18 - Step 5: Solve for x
x = 65,609,705,706.18/290,809.20 - Step 6: Final answer
x = 225,610.83
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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.