Finding the Fourth Proportional to 260,813.80, 391,220.70 and 120,845.80
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Solution
The fourth proportional to 260,813.80, 391,220.70 and 120,845.80 is: 181,268.70
Step by Step Solution
- Step 1: Write the proportion equation
260,813.80 : 391,220.70 = 120,845.80 : x - Step 2: Convert to fraction form
260,813.80/391,220.70 = 120,845.80/x - Step 3: Cross multiply
260,813.80x = 391,220.70 × 120,845.80 - Step 4: Simplify right side
260,813.80x = 47,277,378,468.06 - Step 5: Solve for x
x = 47,277,378,468.06/260,813.80 - Step 6: Final answer
x = 181,268.70
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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.