Finding the Fourth Proportional to 438,629.80, 657,944.70 and 189,311.80
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Solution
The fourth proportional to 438,629.80, 657,944.70 and 189,311.80 is: 283,967.70
Step by Step Solution
- Step 1: Write the proportion equation
438,629.80 : 657,944.70 = 189,311.80 : x - Step 2: Convert to fraction form
438,629.80/657,944.70 = 189,311.80/x - Step 3: Cross multiply
438,629.80x = 657,944.70 × 189,311.80 - Step 4: Simplify right side
438,629.80x = 124,556,695,457.46 - Step 5: Solve for x
x = 124,556,695,457.46/438,629.80 - Step 6: Final answer
x = 283,967.70
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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.