Finding the Fourth Proportional to 386,010.40, 578,756.40 and 206,125.60
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Solution
The fourth proportional to 386,010.40, 578,756.40 and 206,125.60 is: 309,049.99
Step by Step Solution
- Step 1: Write the proportion equation
386,010.40 : 578,756.40 = 206,125.60 : x - Step 2: Convert to fraction form
386,010.40/578,756.40 = 206,125.60/x - Step 3: Cross multiply
386,010.40x = 578,756.40 × 206,125.60 - Step 4: Simplify right side
386,010.40x = 119,296,510,203.84 - Step 5: Solve for x
x = 119,296,510,203.84/386,010.40 - Step 6: Final answer
x = 309,049.99
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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.