Finding the Fourth Proportional to 355,520.14, 531,969.80 and 213,451.74
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Solution
The fourth proportional to 355,520.14, 531,969.80 and 213,451.74 is: 319,390.85
Step by Step Solution
- Step 1: Write the proportion equation
355,520.14 : 531,969.80 = 213,451.74 : x - Step 2: Convert to fraction form
355,520.14/531,969.80 = 213,451.74/x - Step 3: Cross multiply
355,520.14x = 531,969.80 × 213,451.74 - Step 4: Simplify right side
355,520.14x = 113,549,878,370.19 - Step 5: Solve for x
x = 113,549,878,370.19/355,520.14 - Step 6: Final answer
x = 319,390.85
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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.