Finding the Fourth Proportional to 280,450.26, 387,021.12 and 153,125.82
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Solution
The fourth proportional to 280,450.26, 387,021.12 and 153,125.82 is: 211,313.50
Step by Step Solution
- Step 1: Write the proportion equation
280,450.26 : 387,021.12 = 153,125.82 : x - Step 2: Convert to fraction form
280,450.26/387,021.12 = 153,125.82/x - Step 3: Cross multiply
280,450.26x = 387,021.12 × 153,125.82 - Step 4: Simplify right side
280,450.26x = 59,262,926,357.32 - Step 5: Solve for x
x = 59,262,926,357.32/280,450.26 - Step 6: Final answer
x = 211,313.50
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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.