Finding the Fourth Proportional to 213,928.80, 295,129.04 and 128,998.68
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Solution
The fourth proportional to 213,928.80, 295,129.04 and 128,998.68 is: 177,962.28
Step by Step Solution
- Step 1: Write the proportion equation
213,928.80 : 295,129.04 = 128,998.68 : x - Step 2: Convert to fraction form
213,928.80/295,129.04 = 128,998.68/x - Step 3: Cross multiply
213,928.80x = 295,129.04 × 128,998.68 - Step 4: Simplify right side
213,928.80x = 38,071,255,944.67 - Step 5: Solve for x
x = 38,071,255,944.67/213,928.80 - Step 6: Final answer
x = 177,962.28
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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.