Finding the Fourth Proportional to 428,439.89, 591,224.26 and 247,140.99
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Solution
The fourth proportional to 428,439.89, 591,224.26 and 247,140.99 is: 341,041.42
Step by Step Solution
- Step 1: Write the proportion equation
428,439.89 : 591,224.26 = 247,140.99 : x - Step 2: Convert to fraction form
428,439.89/591,224.26 = 247,140.99/x - Step 3: Cross multiply
428,439.89x = 591,224.26 × 247,140.99 - Step 4: Simplify right side
428,439.89x = 146,115,748,928.42 - Step 5: Solve for x
x = 146,115,748,928.42/428,439.89 - Step 6: Final answer
x = 341,041.42
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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.