Finding the Fourth Proportional to 286,729.20, 395,683.92 and 159,403.68
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Solution
The fourth proportional to 286,729.20, 395,683.92 and 159,403.68 is: 219,975.76
Step by Step Solution
- Step 1: Write the proportion equation
286,729.20 : 395,683.92 = 159,403.68 : x - Step 2: Convert to fraction form
286,729.20/395,683.92 = 159,403.68/x - Step 3: Cross multiply
286,729.20x = 395,683.92 × 159,403.68 - Step 4: Simplify right side
286,729.20x = 63,073,472,964.83 - Step 5: Solve for x
x = 63,073,472,964.83/286,729.20 - Step 6: Final answer
x = 219,975.76
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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.