Finding the Fourth Proportional to 206,965.80, 310,448.70 and 153,821.70
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Solution
The fourth proportional to 206,965.80, 310,448.70 and 153,821.70 is: 230,732.55
Step by Step Solution
- Step 1: Write the proportion equation
206,965.80 : 310,448.70 = 153,821.70 : x - Step 2: Convert to fraction form
206,965.80/310,448.70 = 153,821.70/x - Step 3: Cross multiply
206,965.80x = 310,448.70 × 153,821.70 - Step 4: Simplify right side
206,965.80x = 47,753,746,796.79 - Step 5: Solve for x
x = 47,753,746,796.79/206,965.80 - Step 6: Final answer
x = 230,732.55
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.