Finding the Fourth Proportional to 278,427,423.12, 417,662,390.70 and 84,354,912.60
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Solution
The fourth proportional to 278,427,423.12, 417,662,390.70 and 84,354,912.60 is: 126,538,808.82
Step by Step Solution
- Step 1: Write the proportion equation
278,427,423.12 : 417,662,390.70 = 84,354,912.60 : x - Step 2: Convert to fraction form
278,427,423.12/417,662,390.70 = 84,354,912.60/x - Step 3: Cross multiply
278,427,423.12x = 417,662,390.70 × 84,354,912.60 - Step 4: Simplify right side
278,427,423.12x = 35,231,874,463,805,548 - Step 5: Solve for x
x = 35,231,874,463,805,548/278,427,423.12 - Step 6: Final answer
x = 126,538,808.82
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.