Finding the Fourth Proportional to 356,079,948.09, 490,248,273.46 and 277,662,876.09
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Solution
The fourth proportional to 356,079,948.09, 490,248,273.46 and 277,662,876.09 is: 382,284,221.11
Step by Step Solution
- Step 1: Write the proportion equation
356,079,948.09 : 490,248,273.46 = 277,662,876.09 : x - Step 2: Convert to fraction form
356,079,948.09/490,248,273.46 = 277,662,876.09/x - Step 3: Cross multiply
356,079,948.09x = 490,248,273.46 × 277,662,876.09 - Step 4: Simplify right side
356,079,948.09x = 136,123,745,607,060,400 - Step 5: Solve for x
x = 136,123,745,607,060,400/356,079,948.09 - Step 6: Final answer
x = 382,284,221.11
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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.