Finding the Fourth Proportional to 287,713.20, 431,569.80 and 110,128.80
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Solution
The fourth proportional to 287,713.20, 431,569.80 and 110,128.80 is: 165,193.20
Step by Step Solution
- Step 1: Write the proportion equation
287,713.20 : 431,569.80 = 110,128.80 : x - Step 2: Convert to fraction form
287,713.20/431,569.80 = 110,128.80/x - Step 3: Cross multiply
287,713.20x = 431,569.80 × 110,128.80 - Step 4: Simplify right side
287,713.20x = 47,528,264,190.24 - Step 5: Solve for x
x = 47,528,264,190.24/287,713.20 - Step 6: Final answer
x = 165,193.20
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.