Finding the Fourth Proportional to 316,989.79, 437,490.77 and 196,169.99
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Solution
The fourth proportional to 316,989.79, 437,490.77 and 196,169.99 is: 270,742.34
Step by Step Solution
- Step 1: Write the proportion equation
316,989.79 : 437,490.77 = 196,169.99 : x - Step 2: Convert to fraction form
316,989.79/437,490.77 = 196,169.99/x - Step 3: Cross multiply
316,989.79x = 437,490.77 × 196,169.99 - Step 4: Simplify right side
316,989.79x = 85,822,556,807.69 - Step 5: Solve for x
x = 85,822,556,807.69/316,989.79 - Step 6: Final answer
x = 270,742.34
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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.