Finding the Fourth Proportional to 265,601.09, 398,479.36 and 85,683.05
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Solution
The fourth proportional to 265,601.09, 398,479.36 and 85,683.05 is: 128,549.65
Step by Step Solution
- Step 1: Write the proportion equation
265,601.09 : 398,479.36 = 85,683.05 : x - Step 2: Convert to fraction form
265,601.09/398,479.36 = 85,683.05/x - Step 3: Cross multiply
265,601.09x = 398,479.36 × 85,683.05 - Step 4: Simplify right side
265,601.09x = 34,142,928,616.64 - Step 5: Solve for x
x = 34,142,928,616.64/265,601.09 - Step 6: Final answer
x = 128,549.65
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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.