Finding the Fourth Proportional to 311,936.16, 430,473.19 and 168,696.20
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Solution
The fourth proportional to 311,936.16, 430,473.19 and 168,696.20 is: 232,801.45
Step by Step Solution
- Step 1: Write the proportion equation
311,936.16 : 430,473.19 = 168,696.20 : x - Step 2: Convert to fraction form
311,936.16/430,473.19 = 168,696.20/x - Step 3: Cross multiply
311,936.16x = 430,473.19 × 168,696.20 - Step 4: Simplify right side
311,936.16x = 72,619,191,354.88 - Step 5: Solve for x
x = 72,619,191,354.88/311,936.16 - Step 6: Final answer
x = 232,801.45
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1.5x scale
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.