Finding the Fourth Proportional to 287,959.93, 397,357.11 and 160,643.72
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Solution
The fourth proportional to 287,959.93, 397,357.11 and 160,643.72 is: 221,672.95
Step by Step Solution
- Step 1: Write the proportion equation
287,959.93 : 397,357.11 = 160,643.72 : x - Step 2: Convert to fraction form
287,959.93/397,357.11 = 160,643.72/x - Step 3: Cross multiply
287,959.93x = 397,357.11 × 160,643.72 - Step 4: Simplify right side
287,959.93x = 63,832,925,312.24 - Step 5: Solve for x
x = 63,832,925,312.24/287,959.93 - Step 6: Final answer
x = 221,672.95
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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.