Finding the Fourth Proportional to 438,121.20, 657,181.80 and 157,537.20
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Solution
The fourth proportional to 438,121.20, 657,181.80 and 157,537.20 is: 236,305.80
Step by Step Solution
- Step 1: Write the proportion equation
438,121.20 : 657,181.80 = 157,537.20 : x - Step 2: Convert to fraction form
438,121.20/657,181.80 = 157,537.20/x - Step 3: Cross multiply
438,121.20x = 657,181.80 × 157,537.20 - Step 4: Simplify right side
438,121.20x = 103,530,580,662.96 - Step 5: Solve for x
x = 103,530,580,662.96/438,121.20 - Step 6: Final answer
x = 236,305.80
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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.