Finding the Fourth Proportional to 257,808.05, 355,769.75 and 143,080.02
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Solution
The fourth proportional to 257,808.05, 355,769.75 and 143,080.02 is: 197,447.45
Step by Step Solution
- Step 1: Write the proportion equation
257,808.05 : 355,769.75 = 143,080.02 : x - Step 2: Convert to fraction form
257,808.05/355,769.75 = 143,080.02/x - Step 3: Cross multiply
257,808.05x = 355,769.75 × 143,080.02 - Step 4: Simplify right side
257,808.05x = 50,903,542,229.99 - Step 5: Solve for x
x = 50,903,542,229.99/257,808.05 - Step 6: Final answer
x = 197,447.45
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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.