Finding the Fourth Proportional to 312,765.23, 431,611.35 and 176,794.41
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Solution
The fourth proportional to 312,765.23, 431,611.35 and 176,794.41 is: 243,973.65
Step by Step Solution
- Step 1: Write the proportion equation
312,765.23 : 431,611.35 = 176,794.41 : x - Step 2: Convert to fraction form
312,765.23/431,611.35 = 176,794.41/x - Step 3: Cross multiply
312,765.23x = 431,611.35 × 176,794.41 - Step 4: Simplify right side
312,765.23x = 76,306,473,972.55 - Step 5: Solve for x
x = 76,306,473,972.55/312,765.23 - Step 6: Final answer
x = 243,973.65
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.