Finding the Fourth Proportional to 212,734.80, 319,102.20 and 178,909.20
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Solution
The fourth proportional to 212,734.80, 319,102.20 and 178,909.20 is: 268,363.80
Step by Step Solution
- Step 1: Write the proportion equation
212,734.80 : 319,102.20 = 178,909.20 : x - Step 2: Convert to fraction form
212,734.80/319,102.20 = 178,909.20/x - Step 3: Cross multiply
212,734.80x = 319,102.20 × 178,909.20 - Step 4: Simplify right side
212,734.80x = 57,090,319,320.24 - Step 5: Solve for x
x = 57,090,319,320.24/212,734.80 - Step 6: Final answer
x = 268,363.80
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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.