Finding the Fourth Proportional to 438,939.32, 605,785.58 and 247,965.08
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Solution
The fourth proportional to 438,939.32, 605,785.58 and 247,965.08 is: 342,219.67
Step by Step Solution
- Step 1: Write the proportion equation
438,939.32 : 605,785.58 = 247,965.08 : x - Step 2: Convert to fraction form
438,939.32/605,785.58 = 247,965.08/x - Step 3: Cross multiply
438,939.32x = 605,785.58 × 247,965.08 - Step 4: Simplify right side
438,939.32x = 150,213,669,807.55 - Step 5: Solve for x
x = 150,213,669,807.55/438,939.32 - Step 6: Final answer
x = 342,219.67
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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.