Finding the Fourth Proportional to 257,995.68, 356,056.39 and 143,296.44
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Solution
The fourth proportional to 257,995.68, 356,056.39 and 143,296.44 is: 197,761.50
Step by Step Solution
- Step 1: Write the proportion equation
257,995.68 : 356,056.39 = 143,296.44 : x - Step 2: Convert to fraction form
257,995.68/356,056.39 = 143,296.44/x - Step 3: Cross multiply
257,995.68x = 356,056.39 × 143,296.44 - Step 4: Simplify right side
257,995.68x = 51,021,613,126.25 - Step 5: Solve for x
x = 51,021,613,126.25/257,995.68 - Step 6: Final answer
x = 197,761.50
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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.