Finding the Fourth Proportional to 230,963.28, 318,760.97 and 128,995.02
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Solution
The fourth proportional to 230,963.28, 318,760.97 and 128,995.02 is: 178,030.80
Step by Step Solution
- Step 1: Write the proportion equation
230,963.28 : 318,760.97 = 128,995.02 : x - Step 2: Convert to fraction form
230,963.28/318,760.97 = 128,995.02/x - Step 3: Cross multiply
230,963.28x = 318,760.97 × 128,995.02 - Step 4: Simplify right side
230,963.28x = 41,118,577,055.39 - Step 5: Solve for x
x = 41,118,577,055.39/230,963.28 - Step 6: Final answer
x = 178,030.80
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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.