Finding the Fourth Proportional to 211,242.84, 291,406.08 and 143,236.80
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Solution
The fourth proportional to 211,242.84, 291,406.08 and 143,236.80 is: 197,592.85
Step by Step Solution
- Step 1: Write the proportion equation
211,242.84 : 291,406.08 = 143,236.80 : x - Step 2: Convert to fraction form
211,242.84/291,406.08 = 143,236.80/x - Step 3: Cross multiply
211,242.84x = 291,406.08 × 143,236.80 - Step 4: Simplify right side
211,242.84x = 41,740,074,399.74 - Step 5: Solve for x
x = 41,740,074,399.74/211,242.84 - Step 6: Final answer
x = 197,592.85
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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.