Finding the Fourth Proportional to 278,045.18, 416,778.82 and 118,223.68
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Solution
The fourth proportional to 278,045.18, 416,778.82 and 118,223.68 is: 177,212.65
Step by Step Solution
- Step 1: Write the proportion equation
278,045.18 : 416,778.82 = 118,223.68 : x - Step 2: Convert to fraction form
278,045.18/416,778.82 = 118,223.68/x - Step 3: Cross multiply
278,045.18x = 416,778.82 × 118,223.68 - Step 4: Simplify right side
278,045.18x = 49,273,124,118.22 - Step 5: Solve for x
x = 49,273,124,118.22/278,045.18 - Step 6: Final answer
x = 177,212.65
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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.