Finding the Fourth Proportional to 278,665,436.88, 417,999,490.68 and 84,578,537.04
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Solution
The fourth proportional to 278,665,436.88, 417,999,490.68 and 84,578,537.04 is: 126,868,210.86
Step by Step Solution
- Step 1: Write the proportion equation
278,665,436.88 : 417,999,490.68 = 84,578,537.04 : x - Step 2: Convert to fraction form
278,665,436.88/417,999,490.68 = 84,578,537.04/x - Step 3: Cross multiply
278,665,436.88x = 417,999,490.68 × 84,578,537.04 - Step 4: Simplify right side
278,665,436.88x = 35,353,785,405,179,520 - Step 5: Solve for x
x = 35,353,785,405,179,520/278,665,436.88 - Step 6: Final answer
x = 126,868,210.86
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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.