Finding the Fourth Proportional to 409,659.96, 614,489.94 and 129,199.08
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Solution
The fourth proportional to 409,659.96, 614,489.94 and 129,199.08 is: 193,798.62
Step by Step Solution
- Step 1: Write the proportion equation
409,659.96 : 614,489.94 = 129,199.08 : x - Step 2: Convert to fraction form
409,659.96/614,489.94 = 129,199.08/x - Step 3: Cross multiply
409,659.96x = 614,489.94 × 129,199.08 - Step 4: Simplify right side
409,659.96x = 79,391,534,917.26 - Step 5: Solve for x
x = 79,391,534,917.26/409,659.96 - Step 6: Final answer
x = 193,798.62
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Similar ratio
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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.