Finding the Fourth Proportional to 430,857.80, 646,286.70 and 194,661.80
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Solution
The fourth proportional to 430,857.80, 646,286.70 and 194,661.80 is: 291,992.70
Step by Step Solution
- Step 1: Write the proportion equation
430,857.80 : 646,286.70 = 194,661.80 : x - Step 2: Convert to fraction form
430,857.80/646,286.70 = 194,661.80/x - Step 3: Cross multiply
430,857.80x = 646,286.70 × 194,661.80 - Step 4: Simplify right side
430,857.80x = 125,807,332,338.06 - Step 5: Solve for x
x = 125,807,332,338.06/430,857.80 - Step 6: Final answer
x = 291,992.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.