Finding the Fourth Proportional to 278,590.07, 384,450.35 and 157,728.21
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Solution
The fourth proportional to 278,590.07, 384,450.35 and 157,728.21 is: 217,662.70
Step by Step Solution
- Step 1: Write the proportion equation
278,590.07 : 384,450.35 = 157,728.21 : x - Step 2: Convert to fraction form
278,590.07/384,450.35 = 157,728.21/x - Step 3: Cross multiply
278,590.07x = 384,450.35 × 157,728.21 - Step 4: Simplify right side
278,590.07x = 60,638,664,750.73 - Step 5: Solve for x
x = 60,638,664,750.73/278,590.07 - Step 6: Final answer
x = 217,662.70
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1.5x scale
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.