Finding the Fourth Proportional to 317,455.29, 438,107.99 and 209,838.69
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Solution
The fourth proportional to 317,455.29, 438,107.99 and 209,838.69 is: 289,590.40
Step by Step Solution
- Step 1: Write the proportion equation
317,455.29 : 438,107.99 = 209,838.69 : x - Step 2: Convert to fraction form
317,455.29/438,107.99 = 209,838.69/x - Step 3: Cross multiply
317,455.29x = 438,107.99 × 209,838.69 - Step 4: Simplify right side
317,455.29x = 91,932,005,650.94 - Step 5: Solve for x
x = 91,932,005,650.94/317,455.29 - Step 6: Final answer
x = 289,590.40
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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.