Finding the Fourth Proportional to 256,798.12, 354,397.80 and 143,621.68
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Solution
The fourth proportional to 256,798.12, 354,397.80 and 143,621.68 is: 198,207.09
Step by Step Solution
- Step 1: Write the proportion equation
256,798.12 : 354,397.80 = 143,621.68 : x - Step 2: Convert to fraction form
256,798.12/354,397.80 = 143,621.68/x - Step 3: Cross multiply
256,798.12x = 354,397.80 × 143,621.68 - Step 4: Simplify right side
256,798.12x = 50,899,207,424.30 - Step 5: Solve for x
x = 50,899,207,424.30/256,798.12 - Step 6: Final answer
x = 198,207.09
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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.