Finding the Fourth Proportional to 230,177.31, 317,639.79 and 128,202.45
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Solution
The fourth proportional to 230,177.31, 317,639.79 and 128,202.45 is: 176,916.66
Step by Step Solution
- Step 1: Write the proportion equation
230,177.31 : 317,639.79 = 128,202.45 : x - Step 2: Convert to fraction form
230,177.31/317,639.79 = 128,202.45/x - Step 3: Cross multiply
230,177.31x = 317,639.79 × 128,202.45 - Step 4: Simplify right side
230,177.31x = 40,722,200,700.33 - Step 5: Solve for x
x = 40,722,200,700.33/230,177.31 - Step 6: Final answer
x = 176,916.66
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1.5x scale
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.