Finding the Fourth Proportional to 305,306.46, 421,305.74 and 169,330.65
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Solution
The fourth proportional to 305,306.46, 421,305.74 and 169,330.65 is: 233,666.76
Step by Step Solution
- Step 1: Write the proportion equation
305,306.46 : 421,305.74 = 169,330.65 : x - Step 2: Convert to fraction form
305,306.46/421,305.74 = 169,330.65/x - Step 3: Cross multiply
305,306.46x = 421,305.74 × 169,330.65 - Step 4: Simplify right side
305,306.46x = 71,339,971,849.75 - Step 5: Solve for x
x = 71,339,971,849.75/305,306.46 - Step 6: Final answer
x = 233,666.76
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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.