Finding the Fourth Proportional to 419,137.92, 628,707.08 and 138,655.17
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Solution
The fourth proportional to 419,137.92, 628,707.08 and 138,655.17 is: 207,982.82
Step by Step Solution
- Step 1: Write the proportion equation
419,137.92 : 628,707.08 = 138,655.17 : x - Step 2: Convert to fraction form
419,137.92/628,707.08 = 138,655.17/x - Step 3: Cross multiply
419,137.92x = 628,707.08 × 138,655.17 - Step 4: Simplify right side
419,137.92x = 87,173,487,057.60 - Step 5: Solve for x
x = 87,173,487,057.60/419,137.92 - Step 6: Final answer
x = 207,982.82
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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.