Finding the Fourth Proportional to 278,433.12, 417,649.68 and 68,068.56
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Solution
The fourth proportional to 278,433.12, 417,649.68 and 68,068.56 is: 102,102.84
Step by Step Solution
- Step 1: Write the proportion equation
278,433.12 : 417,649.68 = 68,068.56 : x - Step 2: Convert to fraction form
278,433.12/417,649.68 = 68,068.56/x - Step 3: Cross multiply
278,433.12x = 417,649.68 × 68,068.56 - Step 4: Simplify right side
278,433.12x = 28,428,812,302.06 - Step 5: Solve for x
x = 28,428,812,302.06/278,433.12 - Step 6: Final answer
x = 102,102.84
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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.