Finding the Fourth Proportional to 213,315.28, 294,282.12 and 128,384.08
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Solution
The fourth proportional to 213,315.28, 294,282.12 and 128,384.08 is: 177,114.08
Step by Step Solution
- Step 1: Write the proportion equation
213,315.28 : 294,282.12 = 128,384.08 : x - Step 2: Convert to fraction form
213,315.28/294,282.12 = 128,384.08/x - Step 3: Cross multiply
213,315.28x = 294,282.12 × 128,384.08 - Step 4: Simplify right side
213,315.28x = 37,781,139,236.65 - Step 5: Solve for x
x = 37,781,139,236.65/213,315.28 - Step 6: Final answer
x = 177,114.08
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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.