Finding the Fourth Proportional to 419,135.42, 628,703.34 and 138,652.67
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Solution
The fourth proportional to 419,135.42, 628,703.34 and 138,652.67 is: 207,979.07
Step by Step Solution
- Step 1: Write the proportion equation
419,135.42 : 628,703.34 = 138,652.67 : x - Step 2: Convert to fraction form
419,135.42/628,703.34 = 138,652.67/x - Step 3: Cross multiply
419,135.42x = 628,703.34 × 138,652.67 - Step 4: Simplify right side
419,135.42x = 87,171,396,035.65 - Step 5: Solve for x
x = 87,171,396,035.65/419,135.42 - Step 6: Final answer
x = 207,979.07
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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.