Finding the Fourth Proportional to 381,845.20, 526,931.84 and 212,090.24
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Solution
The fourth proportional to 381,845.20, 526,931.84 and 212,090.24 is: 292,676.46
Step by Step Solution
- Step 1: Write the proportion equation
381,845.20 : 526,931.84 = 212,090.24 : x - Step 2: Convert to fraction form
381,845.20/526,931.84 = 212,090.24/x - Step 3: Cross multiply
381,845.20x = 526,931.84 × 212,090.24 - Step 4: Simplify right side
381,845.20x = 111,757,100,409.24 - Step 5: Solve for x
x = 111,757,100,409.24/381,845.20 - Step 6: Final answer
x = 292,676.46
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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.