Finding the Fourth Proportional to 382,624.64, 528,021.60 and 212,855.12
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Solution
The fourth proportional to 382,624.64, 528,021.60 and 212,855.12 is: 293,739.84
Step by Step Solution
- Step 1: Write the proportion equation
382,624.64 : 528,021.60 = 212,855.12 : x - Step 2: Convert to fraction form
382,624.64/528,021.60 = 212,855.12/x - Step 3: Cross multiply
382,624.64x = 528,021.60 × 212,855.12 - Step 4: Simplify right side
382,624.64x = 112,392,101,030.59 - Step 5: Solve for x
x = 112,392,101,030.59/382,624.64 - Step 6: Final answer
x = 293,739.84
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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.