Finding the Fourth Proportional to 318,006.64, 438,753.36 and 190,635.76
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Solution
The fourth proportional to 318,006.64, 438,753.36 and 190,635.76 is: 263,019.92
Step by Step Solution
- Step 1: Write the proportion equation
318,006.64 : 438,753.36 = 190,635.76 : x - Step 2: Convert to fraction form
318,006.64/438,753.36 = 190,635.76/x - Step 3: Cross multiply
318,006.64x = 438,753.36 × 190,635.76 - Step 4: Simplify right side
318,006.64x = 83,642,080,236.15 - Step 5: Solve for x
x = 83,642,080,236.15/318,006.64 - Step 6: Final answer
x = 263,019.92
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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.