Finding the Fourth Proportional to 280,043.62, 386,444.99 and 159,168.13
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Solution
The fourth proportional to 280,043.62, 386,444.99 and 159,168.13 is: 219,643.38
Step by Step Solution
- Step 1: Write the proportion equation
280,043.62 : 386,444.99 = 159,168.13 : x - Step 2: Convert to fraction form
280,043.62/386,444.99 = 159,168.13/x - Step 3: Cross multiply
280,043.62x = 386,444.99 × 159,168.13 - Step 4: Simplify right side
280,043.62x = 61,509,725,837.98 - Step 5: Solve for x
x = 61,509,725,837.98/280,043.62 - Step 6: Final answer
x = 219,643.38
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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.