Finding the Fourth Proportional to 438,435.20, 657,652.80 and 305,724.80
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Solution
The fourth proportional to 438,435.20, 657,652.80 and 305,724.80 is: 458,587.20
Step by Step Solution
- Step 1: Write the proportion equation
438,435.20 : 657,652.80 = 305,724.80 : x - Step 2: Convert to fraction form
438,435.20/657,652.80 = 305,724.80/x - Step 3: Cross multiply
438,435.20x = 657,652.80 × 305,724.80 - Step 4: Simplify right side
438,435.20x = 201,060,770,749.44 - Step 5: Solve for x
x = 201,060,770,749.44/438,435.20 - Step 6: Final answer
x = 458,587.20
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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.