Finding the Fourth Proportional to 280,759.23, 387,452.97 and 153,432.09
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Solution
The fourth proportional to 280,759.23, 387,452.97 and 153,432.09 is: 211,739.14
Step by Step Solution
- Step 1: Write the proportion equation
280,759.23 : 387,452.97 = 153,432.09 : x - Step 2: Convert to fraction form
280,759.23/387,452.97 = 153,432.09/x - Step 3: Cross multiply
280,759.23x = 387,452.97 × 153,432.09 - Step 4: Simplify right side
280,759.23x = 59,447,718,963.81 - Step 5: Solve for x
x = 59,447,718,963.81/280,759.23 - Step 6: Final answer
x = 211,739.14
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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.