Finding the Fourth Proportional to 383,513.36, 529,279.94 and 211,447.09
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Solution
The fourth proportional to 383,513.36, 529,279.94 and 211,447.09 is: 291,814.34
Step by Step Solution
- Step 1: Write the proportion equation
383,513.36 : 529,279.94 = 211,447.09 : x - Step 2: Convert to fraction form
383,513.36/529,279.94 = 211,447.09/x - Step 3: Cross multiply
383,513.36x = 529,279.94 × 211,447.09 - Step 4: Simplify right side
383,513.36x = 111,914,699,404.74 - Step 5: Solve for x
x = 111,914,699,404.74/383,513.36 - Step 6: Final answer
x = 291,814.34
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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.