Finding the Fourth Proportional to 210,742.79, 290,827.35 and 115,247.44
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Solution
The fourth proportional to 210,742.79, 290,827.35 and 115,247.44 is: 159,042.72
Step by Step Solution
- Step 1: Write the proportion equation
210,742.79 : 290,827.35 = 115,247.44 : x - Step 2: Convert to fraction form
210,742.79/290,827.35 = 115,247.44/x - Step 3: Cross multiply
210,742.79x = 290,827.35 × 115,247.44 - Step 4: Simplify right side
210,742.79x = 33,517,106,842.42 - Step 5: Solve for x
x = 33,517,106,842.42/210,742.79 - Step 6: Final answer
x = 159,042.72
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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.