Finding the Fourth Proportional to 230,732.24, 318,409.90 and 128,756.63
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Solution
The fourth proportional to 230,732.24, 318,409.90 and 128,756.63 is: 177,683.82
Step by Step Solution
- Step 1: Write the proportion equation
230,732.24 : 318,409.90 = 128,756.63 : x - Step 2: Convert to fraction form
230,732.24/318,409.90 = 128,756.63/x - Step 3: Cross multiply
230,732.24x = 318,409.90 × 128,756.63 - Step 4: Simplify right side
230,732.24x = 40,997,385,360.75 - Step 5: Solve for x
x = 40,997,385,360.75/230,732.24 - Step 6: Final answer
x = 177,683.82
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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.