Finding the Fourth Proportional to 207,040,658.60, 310,560,987.90 and 99,279,813.80
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Solution
The fourth proportional to 207,040,658.60, 310,560,987.90 and 99,279,813.80 is: 148,919,720.70
Step by Step Solution
- Step 1: Write the proportion equation
207,040,658.60 : 310,560,987.90 = 99,279,813.80 : x - Step 2: Convert to fraction form
207,040,658.60/310,560,987.90 = 99,279,813.80/x - Step 3: Cross multiply
207,040,658.60x = 310,560,987.90 × 99,279,813.80 - Step 4: Simplify right side
207,040,658.60x = 30,832,437,052,256,048 - Step 5: Solve for x
x = 30,832,437,052,256,048/207,040,658.60 - Step 6: Final answer
x = 148,919,720.70
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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.