Finding the Fourth Proportional to 405,132.75, 607,728.69 and 138,891.01
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Solution
The fourth proportional to 405,132.75, 607,728.69 and 138,891.01 is: 208,346.65
Step by Step Solution
- Step 1: Write the proportion equation
405,132.75 : 607,728.69 = 138,891.01 : x - Step 2: Convert to fraction form
405,132.75/607,728.69 = 138,891.01/x - Step 3: Cross multiply
405,132.75x = 607,728.69 × 138,891.01 - Step 4: Simplify right side
405,132.75x = 84,408,051,560.08 - Step 5: Solve for x
x = 84,408,051,560.08/405,132.75 - Step 6: Final answer
x = 208,346.65
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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.