Finding the Fourth Proportional to 485,811.86, 728,811.18 and 186,269.08
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Solution
The fourth proportional to 485,811.86, 728,811.18 and 186,269.08 is: 279,439.43
Step by Step Solution
- Step 1: Write the proportion equation
485,811.86 : 728,811.18 = 186,269.08 : x - Step 2: Convert to fraction form
485,811.86/728,811.18 = 186,269.08/x - Step 3: Cross multiply
485,811.86x = 728,811.18 × 186,269.08 - Step 4: Simplify right side
485,811.86x = 135,754,987,992.31 - Step 5: Solve for x
x = 135,754,987,992.31/485,811.86 - Step 6: Final answer
x = 279,439.43
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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.