Finding the Fourth Proportional to 225,931.12, 311,793.24 and 136,489.84
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Solution
The fourth proportional to 225,931.12, 311,793.24 and 136,489.84 is: 188,360.99
Step by Step Solution
- Step 1: Write the proportion equation
225,931.12 : 311,793.24 = 136,489.84 : x - Step 2: Convert to fraction form
225,931.12/311,793.24 = 136,489.84/x - Step 3: Cross multiply
225,931.12x = 311,793.24 × 136,489.84 - Step 4: Simplify right side
225,931.12x = 42,556,609,440.68 - Step 5: Solve for x
x = 42,556,609,440.68/225,931.12 - Step 6: Final answer
x = 188,360.99
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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.