Finding the Fourth Proportional to 256,845.12, 354,479.84 and 143,691.20
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Solution
The fourth proportional to 256,845.12, 354,479.84 and 143,691.20 is: 198,312.64
Step by Step Solution
- Step 1: Write the proportion equation
256,845.12 : 354,479.84 = 143,691.20 : x - Step 2: Convert to fraction form
256,845.12/354,479.84 = 143,691.20/x - Step 3: Cross multiply
256,845.12x = 354,479.84 × 143,691.20 - Step 4: Simplify right side
256,845.12x = 50,935,633,585.41 - Step 5: Solve for x
x = 50,935,633,585.41/256,845.12 - Step 6: Final answer
x = 198,312.64
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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.