Finding the Fourth Proportional to 240,129.12, 331,379.21 and 131,235.68
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Solution
The fourth proportional to 240,129.12, 331,379.21 and 131,235.68 is: 181,105.80
Step by Step Solution
- Step 1: Write the proportion equation
240,129.12 : 331,379.21 = 131,235.68 : x - Step 2: Convert to fraction form
240,129.12/331,379.21 = 131,235.68/x - Step 3: Cross multiply
240,129.12x = 331,379.21 × 131,235.68 - Step 4: Simplify right side
240,129.12x = 43,488,775,962.21 - Step 5: Solve for x
x = 43,488,775,962.21/240,129.12 - Step 6: Final answer
x = 181,105.80
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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.