Finding the Fourth Proportional to 312,128.36, 430,734.06 and 168,885.26
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Solution
The fourth proportional to 312,128.36, 430,734.06 and 168,885.26 is: 233,059.99
Step by Step Solution
- Step 1: Write the proportion equation
312,128.36 : 430,734.06 = 168,885.26 : x - Step 2: Convert to fraction form
312,128.36/430,734.06 = 168,885.26/x - Step 3: Cross multiply
312,128.36x = 430,734.06 × 168,885.26 - Step 4: Simplify right side
312,128.36x = 72,744,633,713.96 - Step 5: Solve for x
x = 72,744,633,713.96/312,128.36 - Step 6: Final answer
x = 233,059.99
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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.