Finding the Fourth Proportional to 319,678.38, 441,153.09 and 176,435.28
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Solution
The fourth proportional to 319,678.38, 441,153.09 and 176,435.28 is: 243,478.99
Step by Step Solution
- Step 1: Write the proportion equation
319,678.38 : 441,153.09 = 176,435.28 : x - Step 2: Convert to fraction form
319,678.38/441,153.09 = 176,435.28/x - Step 3: Cross multiply
319,678.38x = 441,153.09 × 176,435.28 - Step 4: Simplify right side
319,678.38x = 77,834,968,957.02 - Step 5: Solve for x
x = 77,834,968,957.02/319,678.38 - Step 6: Final answer
x = 243,478.99
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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.