Finding the Fourth Proportional to 368,907,490.68, 509,091,905.70 and 201,644,850.40
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Solution
The fourth proportional to 368,907,490.68, 509,091,905.70 and 201,644,850.40 is: 278,269,657.73
Step by Step Solution
- Step 1: Write the proportion equation
368,907,490.68 : 509,091,905.70 = 201,644,850.40 : x - Step 2: Convert to fraction form
368,907,490.68/509,091,905.70 = 201,644,850.40/x - Step 3: Cross multiply
368,907,490.68x = 509,091,905.70 × 201,644,850.40 - Step 4: Simplify right side
368,907,490.68x = 102,655,761,164,727,408 - Step 5: Solve for x
x = 102,655,761,164,727,408/368,907,490.68 - Step 6: Final answer
x = 278,269,657.73
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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.