Finding the Fourth Proportional to 396,376.79, 546,771.21 and 252,975.20
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Solution
The fourth proportional to 396,376.79, 546,771.21 and 252,975.20 is: 348,959.78
Step by Step Solution
- Step 1: Write the proportion equation
396,376.79 : 546,771.21 = 252,975.20 : x - Step 2: Convert to fraction form
396,376.79/546,771.21 = 252,975.20/x - Step 3: Cross multiply
396,376.79x = 546,771.21 × 252,975.20 - Step 4: Simplify right side
396,376.79x = 138,319,556,203.99 - Step 5: Solve for x
x = 138,319,556,203.99/396,376.79 - Step 6: Final answer
x = 348,959.78
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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.