Finding the Fourth Proportional to 278,347.05, 417,543.12 and 78,669.09
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Solution
The fourth proportional to 278,347.05, 417,543.12 and 78,669.09 is: 118,010.01
Step by Step Solution
- Step 1: Write the proportion equation
278,347.05 : 417,543.12 = 78,669.09 : x - Step 2: Convert to fraction form
278,347.05/417,543.12 = 78,669.09/x - Step 3: Cross multiply
278,347.05x = 417,543.12 × 78,669.09 - Step 4: Simplify right side
278,347.05x = 32,847,737,286.16 - Step 5: Solve for x
x = 32,847,737,286.16/278,347.05 - Step 6: Final answer
x = 118,010.01
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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.