Finding the Fourth Proportional to 447,408.09, 617,449.74 and 256,433.82
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Solution
The fourth proportional to 447,408.09, 617,449.74 and 256,433.82 is: 353,893.90
Step by Step Solution
- Step 1: Write the proportion equation
447,408.09 : 617,449.74 = 256,433.82 : x - Step 2: Convert to fraction form
447,408.09/617,449.74 = 256,433.82/x - Step 3: Cross multiply
447,408.09x = 617,449.74 × 256,433.82 - Step 4: Simplify right side
447,408.09x = 158,334,995,486.21 - Step 5: Solve for x
x = 158,334,995,486.21/447,408.09 - Step 6: Final answer
x = 353,893.90
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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.