Finding the Fourth Proportional to 278,992.15, 418,542.08 and 119,065.75
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Solution
The fourth proportional to 278,992.15, 418,542.08 and 119,065.75 is: 178,621.61
Step by Step Solution
- Step 1: Write the proportion equation
278,992.15 : 418,542.08 = 119,065.75 : x - Step 2: Convert to fraction form
278,992.15/418,542.08 = 119,065.75/x - Step 3: Cross multiply
278,992.15x = 418,542.08 × 119,065.75 - Step 4: Simplify right side
278,992.15x = 49,834,026,661.76 - Step 5: Solve for x
x = 49,834,026,661.76/278,992.15 - Step 6: Final answer
x = 178,621.61
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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.