Finding the Fourth Proportional to 288,899.68, 433,452.16 and 128,961.12
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Solution
The fourth proportional to 288,899.68, 433,452.16 and 128,961.12 is: 193,487.50
Step by Step Solution
- Step 1: Write the proportion equation
288,899.68 : 433,452.16 = 128,961.12 : x - Step 2: Convert to fraction form
288,899.68/433,452.16 = 128,961.12/x - Step 3: Cross multiply
288,899.68x = 433,452.16 × 128,961.12 - Step 4: Simplify right side
288,899.68x = 55,898,476,020.02 - Step 5: Solve for x
x = 55,898,476,020.02/288,899.68 - Step 6: Final answer
x = 193,487.50
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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.