Finding the Fourth Proportional to 280,456.24, 387,026.68 and 153,131.44
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Solution
The fourth proportional to 280,456.24, 387,026.68 and 153,131.44 is: 211,319.79
Step by Step Solution
- Step 1: Write the proportion equation
280,456.24 : 387,026.68 = 153,131.44 : x - Step 2: Convert to fraction form
280,456.24/387,026.68 = 153,131.44/x - Step 3: Cross multiply
280,456.24x = 387,026.68 × 153,131.44 - Step 4: Simplify right side
280,456.24x = 59,265,952,826.82 - Step 5: Solve for x
x = 59,265,952,826.82/280,456.24 - Step 6: Final answer
x = 211,319.79
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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.