Finding the Fourth Proportional to 256,865.99, 354,475.64 and 142,152.98
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Solution
The fourth proportional to 256,865.99, 354,475.64 and 142,152.98 is: 196,171.43
Step by Step Solution
- Step 1: Write the proportion equation
256,865.99 : 354,475.64 = 142,152.98 : x - Step 2: Convert to fraction form
256,865.99/354,475.64 = 142,152.98/x - Step 3: Cross multiply
256,865.99x = 354,475.64 × 142,152.98 - Step 4: Simplify right side
256,865.99x = 50,389,767,146.41 - Step 5: Solve for x
x = 50,389,767,146.41/256,865.99 - Step 6: Final answer
x = 196,171.43
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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.