Finding the Fourth Proportional to 328,955.08, 493,431.36 and 129,135.64
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Solution
The fourth proportional to 328,955.08, 493,431.36 and 129,135.64 is: 193,702.97
Step by Step Solution
- Step 1: Write the proportion equation
328,955.08 : 493,431.36 = 129,135.64 : x - Step 2: Convert to fraction form
328,955.08/493,431.36 = 129,135.64/x - Step 3: Cross multiply
328,955.08x = 493,431.36 × 129,135.64 - Step 4: Simplify right side
328,955.08x = 63,719,574,469.67 - Step 5: Solve for x
x = 63,719,574,469.67/328,955.08 - Step 6: Final answer
x = 193,702.97
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1.5x scale
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.