Finding the Fourth Proportional to 221,445.72, 305,595.12 and 136,612.08
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Solution
The fourth proportional to 221,445.72, 305,595.12 and 136,612.08 is: 188,524.69
Step by Step Solution
- Step 1: Write the proportion equation
221,445.72 : 305,595.12 = 136,612.08 : x - Step 2: Convert to fraction form
221,445.72/305,595.12 = 136,612.08/x - Step 3: Cross multiply
221,445.72x = 305,595.12 × 136,612.08 - Step 4: Simplify right side
221,445.72x = 41,747,984,981.05 - Step 5: Solve for x
x = 41,747,984,981.05/221,445.72 - Step 6: Final answer
x = 188,524.69
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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.