Finding the Fourth Proportional to 225,957.12, 311,829.12 and 136,515.84
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Solution
The fourth proportional to 225,957.12, 311,829.12 and 136,515.84 is: 188,396.87
Step by Step Solution
- Step 1: Write the proportion equation
225,957.12 : 311,829.12 = 136,515.84 : x - Step 2: Convert to fraction form
225,957.12/311,829.12 = 136,515.84/x - Step 3: Cross multiply
225,957.12x = 311,829.12 × 136,515.84 - Step 4: Simplify right side
225,957.12x = 42,569,614,253.26 - Step 5: Solve for x
x = 42,569,614,253.26/225,957.12 - Step 6: Final answer
x = 188,396.87
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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.