Finding the Fourth Proportional to 355,539.30, 490,651.92 and 212,272.62
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Solution
The fourth proportional to 355,539.30, 490,651.92 and 212,272.62 is: 292,940.80
Step by Step Solution
- Step 1: Write the proportion equation
355,539.30 : 490,651.92 = 212,272.62 : x - Step 2: Convert to fraction form
355,539.30/490,651.92 = 212,272.62/x - Step 3: Cross multiply
355,539.30x = 490,651.92 × 212,272.62 - Step 4: Simplify right side
355,539.30x = 104,151,968,566.43 - Step 5: Solve for x
x = 104,151,968,566.43/355,539.30 - Step 6: Final answer
x = 292,940.80
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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.