Finding the Fourth Proportional to 280,979.62, 387,751.66 and 153,655.18
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Solution
The fourth proportional to 280,979.62, 387,751.66 and 153,655.18 is: 212,044.03
Step by Step Solution
- Step 1: Write the proportion equation
280,979.62 : 387,751.66 = 153,655.18 : x - Step 2: Convert to fraction form
280,979.62/387,751.66 = 153,655.18/x - Step 3: Cross multiply
280,979.62x = 387,751.66 × 153,655.18 - Step 4: Simplify right side
280,979.62x = 59,580,049,759.08 - Step 5: Solve for x
x = 59,580,049,759.08/280,979.62 - Step 6: Final answer
x = 212,044.03
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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.