Finding the Fourth Proportional to 415,053.80, 623,163.90 and 257,589.80
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Solution
The fourth proportional to 415,053.80, 623,163.90 and 257,589.80 is: 386,746.64
Step by Step Solution
- Step 1: Write the proportion equation
415,053.80 : 623,163.90 = 257,589.80 : x - Step 2: Convert to fraction form
415,053.80/623,163.90 = 257,589.80/x - Step 3: Cross multiply
415,053.80x = 623,163.90 × 257,589.80 - Step 4: Simplify right side
415,053.80x = 160,520,664,368.22 - Step 5: Solve for x
x = 160,520,664,368.22/415,053.80 - Step 6: Final answer
x = 386,746.64
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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.