Finding the Fourth Proportional to 213,703.88, 320,437.35 and 87,432.71
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Solution
The fourth proportional to 213,703.88, 320,437.35 and 87,432.71 is: 131,100.59
Step by Step Solution
- Step 1: Write the proportion equation
213,703.88 : 320,437.35 = 87,432.71 : x - Step 2: Convert to fraction form
213,703.88/320,437.35 = 87,432.71/x - Step 3: Cross multiply
213,703.88x = 320,437.35 × 87,432.71 - Step 4: Simplify right side
213,703.88x = 28,016,704,293.53 - Step 5: Solve for x
x = 28,016,704,293.53/213,703.88 - Step 6: Final answer
x = 131,100.59
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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.