Finding the Fourth Proportional to 278,189.15, 383,860.62 and 155,680.94
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Solution
The fourth proportional to 278,189.15, 383,860.62 and 155,680.94 is: 214,817.09
Step by Step Solution
- Step 1: Write the proportion equation
278,189.15 : 383,860.62 = 155,680.94 : x - Step 2: Convert to fraction form
278,189.15/383,860.62 = 155,680.94/x - Step 3: Cross multiply
278,189.15x = 383,860.62 × 155,680.94 - Step 4: Simplify right side
278,189.15x = 59,759,783,110.23 - Step 5: Solve for x
x = 59,759,783,110.23/278,189.15 - Step 6: Final answer
x = 214,817.09
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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.