Finding the Fourth Proportional to 280,589.63, 387,213.75 and 153,265.19
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Solution
The fourth proportional to 280,589.63, 387,213.75 and 153,265.19 is: 211,505.99
Step by Step Solution
- Step 1: Write the proportion equation
280,589.63 : 387,213.75 = 153,265.19 : x - Step 2: Convert to fraction form
280,589.63/387,213.75 = 153,265.19/x - Step 3: Cross multiply
280,589.63x = 387,213.75 × 153,265.19 - Step 4: Simplify right side
280,589.63x = 59,346,387,028.29 - Step 5: Solve for x
x = 59,346,387,028.29/280,589.63 - Step 6: Final answer
x = 211,505.99
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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.