Finding the Fourth Proportional to 211,516.65, 317,117.18 and 127,257.07
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Solution
The fourth proportional to 211,516.65, 317,117.18 and 127,257.07 is: 190,790.66
Step by Step Solution
- Step 1: Write the proportion equation
211,516.65 : 317,117.18 = 127,257.07 : x - Step 2: Convert to fraction form
211,516.65/317,117.18 = 127,257.07/x - Step 3: Cross multiply
211,516.65x = 317,117.18 × 127,257.07 - Step 4: Simplify right side
211,516.65x = 40,355,400,951.59 - Step 5: Solve for x
x = 40,355,400,951.59/211,516.65 - Step 6: Final answer
x = 190,790.66
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.