Finding the Fourth Proportional to 312,180.24, 430,808.70 and 168,940.26
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Solution
The fourth proportional to 312,180.24, 430,808.70 and 168,940.26 is: 233,137.54
Step by Step Solution
- Step 1: Write the proportion equation
312,180.24 : 430,808.70 = 168,940.26 : x - Step 2: Convert to fraction form
312,180.24/430,808.70 = 168,940.26/x - Step 3: Cross multiply
312,180.24x = 430,808.70 × 168,940.26 - Step 4: Simplify right side
312,180.24x = 72,780,933,788.26 - Step 5: Solve for x
x = 72,780,933,788.26/312,180.24 - Step 6: Final answer
x = 233,137.54
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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.