Finding the Fourth Proportional to 305,555.84, 421,686.76 and 169,589.79
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Solution
The fourth proportional to 305,555.84, 421,686.76 and 169,589.79 is: 234,044.84
Step by Step Solution
- Step 1: Write the proportion equation
305,555.84 : 421,686.76 = 169,589.79 : x - Step 2: Convert to fraction form
305,555.84/421,686.76 = 169,589.79/x - Step 3: Cross multiply
305,555.84x = 421,686.76 × 169,589.79 - Step 4: Simplify right side
305,555.84x = 71,513,769,074.18 - Step 5: Solve for x
x = 71,513,769,074.18/305,555.84 - Step 6: Final answer
x = 234,044.84
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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.