Finding the Fourth Proportional to 222,153.21, 306,563.81 and 126,690.63
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Solution
The fourth proportional to 222,153.21, 306,563.81 and 126,690.63 is: 174,828.72
Step by Step Solution
- Step 1: Write the proportion equation
222,153.21 : 306,563.81 = 126,690.63 : x - Step 2: Convert to fraction form
222,153.21/306,563.81 = 126,690.63/x - Step 3: Cross multiply
222,153.21x = 306,563.81 × 126,690.63 - Step 4: Simplify right side
222,153.21x = 38,838,761,590.65 - Step 5: Solve for x
x = 38,838,761,590.65/222,153.21 - Step 6: Final answer
x = 174,828.72
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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.