Finding the Fourth Proportional to 359,423.80, 539,135.70 and 149,039.80
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Solution
The fourth proportional to 359,423.80, 539,135.70 and 149,039.80 is: 223,559.70
Step by Step Solution
- Step 1: Write the proportion equation
359,423.80 : 539,135.70 = 149,039.80 : x - Step 2: Convert to fraction form
359,423.80/539,135.70 = 149,039.80/x - Step 3: Cross multiply
359,423.80x = 539,135.70 × 149,039.80 - Step 4: Simplify right side
359,423.80x = 80,352,676,900.86 - Step 5: Solve for x
x = 80,352,676,900.86/359,423.80 - Step 6: Final answer
x = 223,559.70
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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.