Finding the Fourth Proportional to 312,309.96, 430,828.68 and 189,769.32
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Solution
The fourth proportional to 312,309.96, 430,828.68 and 189,769.32 is: 261,785.01
Step by Step Solution
- Step 1: Write the proportion equation
312,309.96 : 430,828.68 = 189,769.32 : x - Step 2: Convert to fraction form
312,309.96/430,828.68 = 189,769.32/x - Step 3: Cross multiply
312,309.96x = 430,828.68 × 189,769.32 - Step 4: Simplify right side
312,309.96x = 81,758,065,640.10 - Step 5: Solve for x
x = 81,758,065,640.10/312,309.96 - Step 6: Final answer
x = 261,785.01
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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.