Finding the Fourth Proportional to 213,637.05, 294,726.47 and 128,705.31
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Solution
The fourth proportional to 213,637.05, 294,726.47 and 128,705.31 is: 177,557.50
Step by Step Solution
- Step 1: Write the proportion equation
213,637.05 : 294,726.47 = 128,705.31 : x - Step 2: Convert to fraction form
213,637.05/294,726.47 = 128,705.31/x - Step 3: Cross multiply
213,637.05x = 294,726.47 × 128,705.31 - Step 4: Simplify right side
213,637.05x = 37,932,861,043.03 - Step 5: Solve for x
x = 37,932,861,043.03/213,637.05 - Step 6: Final answer
x = 177,557.50
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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.