Finding the Fourth Proportional to 407,720.09, 611,337.84 and 155,019.07
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Solution
The fourth proportional to 407,720.09, 611,337.84 and 155,019.07 is: 232,436.48
Step by Step Solution
- Step 1: Write the proportion equation
407,720.09 : 611,337.84 = 155,019.07 : x - Step 2: Convert to fraction form
407,720.09/611,337.84 = 155,019.07/x - Step 3: Cross multiply
407,720.09x = 611,337.84 × 155,019.07 - Step 4: Simplify right side
407,720.09x = 94,769,023,412.61 - Step 5: Solve for x
x = 94,769,023,412.61/407,720.09 - Step 6: Final answer
x = 232,436.48
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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.