Finding the Fourth Proportional to 409,249.49, 612,742.46 and 209,138.99
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Solution
The fourth proportional to 409,249.49, 612,742.46 and 209,138.99 is: 313,130.11
Step by Step Solution
- Step 1: Write the proportion equation
409,249.49 : 612,742.46 = 209,138.99 : x - Step 2: Convert to fraction form
409,249.49/612,742.46 = 209,138.99/x - Step 3: Cross multiply
409,249.49x = 612,742.46 × 209,138.99 - Step 4: Simplify right side
409,249.49x = 128,148,335,105.11 - Step 5: Solve for x
x = 128,148,335,105.11/409,249.49 - Step 6: Final answer
x = 313,130.11
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.