Finding the Fourth Proportional to 485,439.05, 728,159.08 and 262,218.79
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Solution
The fourth proportional to 485,439.05, 728,159.08 and 262,218.79 is: 393,328.46
Step by Step Solution
- Step 1: Write the proportion equation
485,439.05 : 728,159.08 = 262,218.79 : x - Step 2: Convert to fraction form
485,439.05/728,159.08 = 262,218.79/x - Step 3: Cross multiply
485,439.05x = 728,159.08 × 262,218.79 - Step 4: Simplify right side
485,439.05x = 190,936,990,409.17 - Step 5: Solve for x
x = 190,936,990,409.17/485,439.05 - Step 6: Final answer
x = 393,328.46
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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.