Finding the Fourth Proportional to 278,107.42, 383,764.62 and 157,231.94
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Solution
The fourth proportional to 278,107.42, 383,764.62 and 157,231.94 is: 216,966.72
Step by Step Solution
- Step 1: Write the proportion equation
278,107.42 : 383,764.62 = 157,231.94 : x - Step 2: Convert to fraction form
278,107.42/383,764.62 = 157,231.94/x - Step 3: Cross multiply
278,107.42x = 383,764.62 × 157,231.94 - Step 4: Simplify right side
278,107.42x = 60,340,055,705.96 - Step 5: Solve for x
x = 60,340,055,705.96/278,107.42 - Step 6: Final answer
x = 216,966.72
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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.