Finding the Fourth Proportional to 235,503.12, 324,991.23 and 128,070.84
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Solution
The fourth proportional to 235,503.12, 324,991.23 and 128,070.84 is: 176,736.09
Step by Step Solution
- Step 1: Write the proportion equation
235,503.12 : 324,991.23 = 128,070.84 : x - Step 2: Convert to fraction form
235,503.12/324,991.23 = 128,070.84/x - Step 3: Cross multiply
235,503.12x = 324,991.23 × 128,070.84 - Step 4: Simplify right side
235,503.12x = 41,621,899,818.73 - Step 5: Solve for x
x = 41,621,899,818.73/235,503.12 - Step 6: Final answer
x = 176,736.09
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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.