Finding the Fourth Proportional to 257,911.80, 386,867.70 and 168,232.65
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Solution
The fourth proportional to 257,911.80, 386,867.70 and 168,232.65 is: 252,348.98
Step by Step Solution
- Step 1: Write the proportion equation
257,911.80 : 386,867.70 = 168,232.65 : x - Step 2: Convert to fraction form
257,911.80/386,867.70 = 168,232.65/x - Step 3: Cross multiply
257,911.80x = 386,867.70 × 168,232.65 - Step 4: Simplify right side
257,911.80x = 65,083,778,370.41 - Step 5: Solve for x
x = 65,083,778,370.41/257,911.80 - Step 6: Final answer
x = 252,348.98
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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.