Finding the Fourth Proportional to 359,405.80, 539,108.70 and 149,021.80
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Solution
The fourth proportional to 359,405.80, 539,108.70 and 149,021.80 is: 223,532.70
Step by Step Solution
- Step 1: Write the proportion equation
359,405.80 : 539,108.70 = 149,021.80 : x - Step 2: Convert to fraction form
359,405.80/539,108.70 = 149,021.80/x - Step 3: Cross multiply
359,405.80x = 539,108.70 × 149,021.80 - Step 4: Simplify right side
359,405.80x = 80,338,948,869.66 - Step 5: Solve for x
x = 80,338,948,869.66/359,405.80 - Step 6: Final answer
x = 223,532.70
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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.