Finding the Fourth Proportional to 257,446.09, 355,296.58 and 142,760.70
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Solution
The fourth proportional to 257,446.09, 355,296.58 and 142,760.70 is: 197,021.40
Step by Step Solution
- Step 1: Write the proportion equation
257,446.09 : 355,296.58 = 142,760.70 : x - Step 2: Convert to fraction form
257,446.09/355,296.58 = 142,760.70/x - Step 3: Cross multiply
257,446.09x = 355,296.58 × 142,760.70 - Step 4: Simplify right side
257,446.09x = 50,722,388,468.41 - Step 5: Solve for x
x = 50,722,388,468.41/257,446.09 - Step 6: Final answer
x = 197,021.40
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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.