Finding the Fourth Proportional to 256,602.12, 354,118.26 and 143,425.08
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Solution
The fourth proportional to 256,602.12, 354,118.26 and 143,425.08 is: 197,930.71
Step by Step Solution
- Step 1: Write the proportion equation
256,602.12 : 354,118.26 = 143,425.08 : x - Step 2: Convert to fraction form
256,602.12/354,118.26 = 143,425.08/x - Step 3: Cross multiply
256,602.12x = 354,118.26 × 143,425.08 - Step 4: Simplify right side
256,602.12x = 50,789,439,769.96 - Step 5: Solve for x
x = 50,789,439,769.96/256,602.12 - Step 6: Final answer
x = 197,930.71
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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.