Finding the Fourth Proportional to 256,603.12, 354,119.64 and 143,426.08
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Solution
The fourth proportional to 256,603.12, 354,119.64 and 143,426.08 is: 197,932.09
Step by Step Solution
- Step 1: Write the proportion equation
256,603.12 : 354,119.64 = 143,426.08 : x - Step 2: Convert to fraction form
256,603.12/354,119.64 = 143,426.08/x - Step 3: Cross multiply
256,603.12x = 354,119.64 × 143,426.08 - Step 4: Simplify right side
256,603.12x = 50,789,991,816.21 - Step 5: Solve for x
x = 50,789,991,816.21/256,603.12 - Step 6: Final answer
x = 197,932.09
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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.