Finding the Fourth Proportional to 225,286.08, 310,882.44 and 128,475.72
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Solution
The fourth proportional to 225,286.08, 310,882.44 and 128,475.72 is: 177,289.45
Step by Step Solution
- Step 1: Write the proportion equation
225,286.08 : 310,882.44 = 128,475.72 : x - Step 2: Convert to fraction form
225,286.08/310,882.44 = 128,475.72/x - Step 3: Cross multiply
225,286.08x = 310,882.44 × 128,475.72 - Step 4: Simplify right side
225,286.08x = 39,940,845,314.36 - Step 5: Solve for x
x = 39,940,845,314.36/225,286.08 - Step 6: Final answer
x = 177,289.45
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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.