Finding the Fourth Proportional to 239,631.80, 359,447.70 and 81,807.80
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Solution
The fourth proportional to 239,631.80, 359,447.70 and 81,807.80 is: 122,711.70
Step by Step Solution
- Step 1: Write the proportion equation
239,631.80 : 359,447.70 = 81,807.80 : x - Step 2: Convert to fraction form
239,631.80/359,447.70 = 81,807.80/x - Step 3: Cross multiply
239,631.80x = 359,447.70 × 81,807.80 - Step 4: Simplify right side
239,631.80x = 29,405,625,552.06 - Step 5: Solve for x
x = 29,405,625,552.06/239,631.80 - Step 6: Final answer
x = 122,711.70
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1.5x scale
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.