Finding the Fourth Proportional to 218,969.06, 302,177.50 and 128,306.97
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Solution
The fourth proportional to 218,969.06, 302,177.50 and 128,306.97 is: 177,063.74
Step by Step Solution
- Step 1: Write the proportion equation
218,969.06 : 302,177.50 = 128,306.97 : x - Step 2: Convert to fraction form
218,969.06/302,177.50 = 128,306.97/x - Step 3: Cross multiply
218,969.06x = 302,177.50 × 128,306.97 - Step 4: Simplify right side
218,969.06x = 38,771,479,106.41 - Step 5: Solve for x
x = 38,771,479,106.41/218,969.06 - Step 6: Final answer
x = 177,063.74
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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.