Finding the Fourth Proportional to 418,914.24, 628,468.56 and 138,414.48
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Solution
The fourth proportional to 418,914.24, 628,468.56 and 138,414.48 is: 207,653.84
Step by Step Solution
- Step 1: Write the proportion equation
418,914.24 : 628,468.56 = 138,414.48 : x - Step 2: Convert to fraction form
418,914.24/628,468.56 = 138,414.48/x - Step 3: Cross multiply
418,914.24x = 628,468.56 × 138,414.48 - Step 4: Simplify right side
418,914.24x = 86,989,148,928.75 - Step 5: Solve for x
x = 86,989,148,928.75/418,914.24 - Step 6: Final answer
x = 207,653.84
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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.