Finding the Fourth Proportional to 316,986.99, 437,486.90 and 196,167.18
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Solution
The fourth proportional to 316,986.99, 437,486.90 and 196,167.18 is: 270,738.47
Step by Step Solution
- Step 1: Write the proportion equation
316,986.99 : 437,486.90 = 196,167.18 : x - Step 2: Convert to fraction form
316,986.99/437,486.90 = 196,167.18/x - Step 3: Cross multiply
316,986.99x = 437,486.90 × 196,167.18 - Step 4: Simplify right side
316,986.99x = 85,820,572,119.68 - Step 5: Solve for x
x = 85,820,572,119.68/316,986.99 - Step 6: Final answer
x = 270,738.47
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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.