Finding the Fourth Proportional to 305,780.55, 421,979.70 and 169,816.75
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Solution
The fourth proportional to 305,780.55, 421,979.70 and 169,816.75 is: 234,348.53
Step by Step Solution
- Step 1: Write the proportion equation
305,780.55 : 421,979.70 = 169,816.75 : x - Step 2: Convert to fraction form
305,780.55/421,979.70 = 169,816.75/x - Step 3: Cross multiply
305,780.55x = 421,979.70 × 169,816.75 - Step 4: Simplify right side
305,780.55x = 71,659,221,219.98 - Step 5: Solve for x
x = 71,659,221,219.98/305,780.55 - Step 6: Final answer
x = 234,348.53
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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.