Finding the Fourth Proportional to 305,621.80, 421,750.15 and 169,652.21
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Solution
The fourth proportional to 305,621.80, 421,750.15 and 169,652.21 is: 234,115.65
Step by Step Solution
- Step 1: Write the proportion equation
305,621.80 : 421,750.15 = 169,652.21 : x - Step 2: Convert to fraction form
305,621.80/421,750.15 = 169,652.21/x - Step 3: Cross multiply
305,621.80x = 421,750.15 × 169,652.21 - Step 4: Simplify right side
305,621.80x = 71,550,845,015.33 - Step 5: Solve for x
x = 71,550,845,015.33/305,621.80 - Step 6: Final answer
x = 234,115.65
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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.