Finding the Fourth Proportional to 211,871.28, 292,142.76 and 135,289.68
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Solution
The fourth proportional to 211,871.28, 292,142.76 and 135,289.68 is: 186,546.76
Step by Step Solution
- Step 1: Write the proportion equation
211,871.28 : 292,142.76 = 135,289.68 : x - Step 2: Convert to fraction form
211,871.28/292,142.76 = 135,289.68/x - Step 3: Cross multiply
211,871.28x = 292,142.76 × 135,289.68 - Step 4: Simplify right side
211,871.28x = 39,523,900,514.72 - Step 5: Solve for x
x = 39,523,900,514.72/211,871.28 - Step 6: Final answer
x = 186,546.76
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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.