Finding the Fourth Proportional to 261,928.64, 392,629.92 and 84,305.12
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Solution
The fourth proportional to 261,928.64, 392,629.92 and 84,305.12 is: 126,373.02
Step by Step Solution
- Step 1: Write the proportion equation
261,928.64 : 392,629.92 = 84,305.12 : x - Step 2: Convert to fraction form
261,928.64/392,629.92 = 84,305.12/x - Step 3: Cross multiply
261,928.64x = 392,629.92 × 84,305.12 - Step 4: Simplify right side
261,928.64x = 33,100,712,521.19 - Step 5: Solve for x
x = 33,100,712,521.19/261,928.64 - Step 6: Final answer
x = 126,373.02
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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.