Finding the Fourth Proportional to 221,523.75, 305,702.91 and 136,690.02
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Solution
The fourth proportional to 221,523.75, 305,702.91 and 136,690.02 is: 188,632.31
Step by Step Solution
- Step 1: Write the proportion equation
221,523.75 : 305,702.91 = 136,690.02 : x - Step 2: Convert to fraction form
221,523.75/305,702.91 = 136,690.02/x - Step 3: Cross multiply
221,523.75x = 305,702.91 × 136,690.02 - Step 4: Simplify right side
221,523.75x = 41,786,536,881.96 - Step 5: Solve for x
x = 41,786,536,881.96/221,523.75 - Step 6: Final answer
x = 188,632.31
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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.