Finding the Fourth Proportional to 263,986.40, 363,948.81 and 209,718.63
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Solution
The fourth proportional to 263,986.40, 363,948.81 and 209,718.63 is: 289,131.73
Step by Step Solution
- Step 1: Write the proportion equation
263,986.40 : 363,948.81 = 209,718.63 : x - Step 2: Convert to fraction form
263,986.40/363,948.81 = 209,718.63/x - Step 3: Cross multiply
263,986.40x = 363,948.81 × 209,718.63 - Step 4: Simplify right side
263,986.40x = 76,326,845,823.33 - Step 5: Solve for x
x = 76,326,845,823.33/263,986.40 - Step 6: Final answer
x = 289,131.73
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1.5x scale
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.