Finding the Fourth Proportional to 372,408.25, 513,919.07 and 202,639.45
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Solution
The fourth proportional to 372,408.25, 513,919.07 and 202,639.45 is: 279,640.09
Step by Step Solution
- Step 1: Write the proportion equation
372,408.25 : 513,919.07 = 202,639.45 : x - Step 2: Convert to fraction form
372,408.25/513,919.07 = 202,639.45/x - Step 3: Cross multiply
372,408.25x = 513,919.07 × 202,639.45 - Step 4: Simplify right side
372,408.25x = 104,140,276,676.11 - Step 5: Solve for x
x = 104,140,276,676.11/372,408.25 - Step 6: Final answer
x = 279,640.09
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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.