Finding the Fourth Proportional to 245,610.70, 338,918.64 and 138,178.42
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Solution
The fourth proportional to 245,610.70, 338,918.64 and 138,178.42 is: 190,672.65
Step by Step Solution
- Step 1: Write the proportion equation
245,610.70 : 338,918.64 = 138,178.42 : x - Step 2: Convert to fraction form
245,610.70/338,918.64 = 138,178.42/x - Step 3: Cross multiply
245,610.70x = 338,918.64 × 138,178.42 - Step 4: Simplify right side
245,610.70x = 46,831,242,183.75 - Step 5: Solve for x
x = 46,831,242,183.75/245,610.70 - Step 6: Final answer
x = 190,672.65
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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.