Finding the Fourth Proportional to 318,405.09, 439,398.96 and 191,080.79
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Solution
The fourth proportional to 318,405.09, 439,398.96 and 191,080.79 is: 263,691.44
Step by Step Solution
- Step 1: Write the proportion equation
318,405.09 : 439,398.96 = 191,080.79 : x - Step 2: Convert to fraction form
318,405.09/439,398.96 = 191,080.79/x - Step 3: Cross multiply
318,405.09x = 439,398.96 × 191,080.79 - Step 4: Simplify right side
318,405.09x = 83,960,698,204.98 - Step 5: Solve for x
x = 83,960,698,204.98/318,405.09 - Step 6: Final answer
x = 263,691.44
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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.