Finding the Fourth Proportional to 428,490.12, 591,306.30 and 247,202.44
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Solution
The fourth proportional to 428,490.12, 591,306.30 and 247,202.44 is: 341,133.56
Step by Step Solution
- Step 1: Write the proportion equation
428,490.12 : 591,306.30 = 247,202.44 : x - Step 2: Convert to fraction form
428,490.12/591,306.30 = 247,202.44/x - Step 3: Cross multiply
428,490.12x = 591,306.30 × 247,202.44 - Step 4: Simplify right side
428,490.12x = 146,172,360,147.37 - Step 5: Solve for x
x = 146,172,360,147.37/428,490.12 - Step 6: Final answer
x = 341,133.56
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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.