Finding the Fourth Proportional to 355,809.99, 490,969.32 and 212,539.62
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Solution
The fourth proportional to 355,809.99, 490,969.32 and 212,539.62 is: 293,275.72
Step by Step Solution
- Step 1: Write the proportion equation
355,809.99 : 490,969.32 = 212,539.62 : x - Step 2: Convert to fraction form
355,809.99/490,969.32 = 212,539.62/x - Step 3: Cross multiply
355,809.99x = 490,969.32 × 212,539.62 - Step 4: Simplify right side
355,809.99x = 104,350,432,704.46 - Step 5: Solve for x
x = 104,350,432,704.46/355,809.99 - Step 6: Final answer
x = 293,275.72
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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.