Finding the Fourth Proportional to 393,483.52, 589,003.49 and 213,120.99
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Solution
The fourth proportional to 393,483.52, 589,003.49 and 213,120.99 is: 319,019.73
Step by Step Solution
- Step 1: Write the proportion equation
393,483.52 : 589,003.49 = 213,120.99 : x - Step 2: Convert to fraction form
393,483.52/589,003.49 = 213,120.99/x - Step 3: Cross multiply
393,483.52x = 589,003.49 × 213,120.99 - Step 4: Simplify right side
393,483.52x = 125,529,002,891.63 - Step 5: Solve for x
x = 125,529,002,891.63/393,483.52 - Step 6: Final answer
x = 319,019.73
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.