Finding the Fourth Proportional to 239,958.24, 331,206.42 and 137,994.84
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Solution
The fourth proportional to 239,958.24, 331,206.42 and 137,994.84 is: 190,469.71
Step by Step Solution
- Step 1: Write the proportion equation
239,958.24 : 331,206.42 = 137,994.84 : x - Step 2: Convert to fraction form
239,958.24/331,206.42 = 137,994.84/x - Step 3: Cross multiply
239,958.24x = 331,206.42 × 137,994.84 - Step 4: Simplify right side
239,958.24x = 45,704,776,934.87 - Step 5: Solve for x
x = 45,704,776,934.87/239,958.24 - Step 6: Final answer
x = 190,469.71
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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.