Finding the Fourth Proportional to 398,905.40, 550,449.06 and 245,919.08
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Solution
The fourth proportional to 398,905.40, 550,449.06 and 245,919.08 is: 339,343.43
Step by Step Solution
- Step 1: Write the proportion equation
398,905.40 : 550,449.06 = 245,919.08 : x - Step 2: Convert to fraction form
398,905.40/550,449.06 = 245,919.08/x - Step 3: Cross multiply
398,905.40x = 550,449.06 × 245,919.08 - Step 4: Simplify right side
398,905.40x = 135,365,926,422.07 - Step 5: Solve for x
x = 135,365,926,422.07/398,905.40 - Step 6: Final answer
x = 339,343.43
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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.