Finding the Fourth Proportional to 361,813.70, 542,720.55 and 221,845.70
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Solution
The fourth proportional to 361,813.70, 542,720.55 and 221,845.70 is: 332,768.55
Step by Step Solution
- Step 1: Write the proportion equation
361,813.70 : 542,720.55 = 221,845.70 : x - Step 2: Convert to fraction form
361,813.70/542,720.55 = 221,845.70/x - Step 3: Cross multiply
361,813.70x = 542,720.55 × 221,845.70 - Step 4: Simplify right side
361,813.70x = 120,400,220,319.14 - Step 5: Solve for x
x = 120,400,220,319.14/361,813.70 - Step 6: Final answer
x = 332,768.55
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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.