Finding the Fourth Proportional to 419,138.67, 628,708.22 and 138,655.92
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Solution
The fourth proportional to 419,138.67, 628,708.22 and 138,655.92 is: 207,983.95
Step by Step Solution
- Step 1: Write the proportion equation
419,138.67 : 628,708.22 = 138,655.92 : x - Step 2: Convert to fraction form
419,138.67/628,708.22 = 138,655.92/x - Step 3: Cross multiply
419,138.67x = 628,708.22 × 138,655.92 - Step 4: Simplify right side
419,138.67x = 87,174,115,962.38 - Step 5: Solve for x
x = 87,174,115,962.38/419,138.67 - Step 6: Final answer
x = 207,983.95
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.