Finding the Fourth Proportional to 280,915.42, 387,660.63 and 153,589.66
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Solution
The fourth proportional to 280,915.42, 387,660.63 and 153,589.66 is: 211,952.28
Step by Step Solution
- Step 1: Write the proportion equation
280,915.42 : 387,660.63 = 153,589.66 : x - Step 2: Convert to fraction form
280,915.42/387,660.63 = 153,589.66/x - Step 3: Cross multiply
280,915.42x = 387,660.63 × 153,589.66 - Step 4: Simplify right side
280,915.42x = 59,540,664,357.09 - Step 5: Solve for x
x = 59,540,664,357.09/280,915.42 - Step 6: Final answer
x = 211,952.28
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1.5x scale
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.