Finding the Fourth Proportional to 221,490.76, 305,657.38 and 136,657.02
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Solution
The fourth proportional to 221,490.76, 305,657.38 and 136,657.02 is: 188,586.77
Step by Step Solution
- Step 1: Write the proportion equation
221,490.76 : 305,657.38 = 136,657.02 : x - Step 2: Convert to fraction form
221,490.76/305,657.38 = 136,657.02/x - Step 3: Cross multiply
221,490.76x = 305,657.38 × 136,657.02 - Step 4: Simplify right side
221,490.76x = 41,770,226,691.81 - Step 5: Solve for x
x = 41,770,226,691.81/221,490.76 - Step 6: Final answer
x = 188,586.77
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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.