Finding the Fourth Proportional to 317,102.05, 437,621.09 and 209,483.42
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Solution
The fourth proportional to 317,102.05, 437,621.09 and 209,483.42 is: 289,100.50
Step by Step Solution
- Step 1: Write the proportion equation
317,102.05 : 437,621.09 = 209,483.42 : x - Step 2: Convert to fraction form
317,102.05/437,621.09 = 209,483.42/x - Step 3: Cross multiply
317,102.05x = 437,621.09 × 209,483.42 - Step 4: Simplify right side
317,102.05x = 91,674,362,597.33 - Step 5: Solve for x
x = 91,674,362,597.33/317,102.05 - Step 6: Final answer
x = 289,100.50
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1.5x scale
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.