Finding the Fourth Proportional to 257,843.58, 355,807.27 and 143,116.75
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Solution
The fourth proportional to 257,843.58, 355,807.27 and 143,116.75 is: 197,491.75
Step by Step Solution
- Step 1: Write the proportion equation
257,843.58 : 355,807.27 = 143,116.75 : x - Step 2: Convert to fraction form
257,843.58/355,807.27 = 143,116.75/x - Step 3: Cross multiply
257,843.58x = 355,807.27 × 143,116.75 - Step 4: Simplify right side
257,843.58x = 50,921,980,108.77 - Step 5: Solve for x
x = 50,921,980,108.77/257,843.58 - Step 6: Final answer
x = 197,491.75
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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.