Finding the Fourth Proportional to 319,691.40, 441,142.71 and 176,442.21
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Solution
The fourth proportional to 319,691.40, 441,142.71 and 176,442.21 is: 243,472.90
Step by Step Solution
- Step 1: Write the proportion equation
319,691.40 : 441,142.71 = 176,442.21 : x - Step 2: Convert to fraction form
319,691.40/441,142.71 = 176,442.21/x - Step 3: Cross multiply
319,691.40x = 441,142.71 × 176,442.21 - Step 4: Simplify right side
319,691.40x = 77,836,193,795.58 - Step 5: Solve for x
x = 77,836,193,795.58/319,691.40 - Step 6: Final answer
x = 243,472.90
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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.