Finding the Fourth Proportional to 278,993.08, 418,426.73 and 79,309.05
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Solution
The fourth proportional to 278,993.08, 418,426.73 and 79,309.05 is: 118,945.70
Step by Step Solution
- Step 1: Write the proportion equation
278,993.08 : 418,426.73 = 79,309.05 : x - Step 2: Convert to fraction form
278,993.08/418,426.73 = 79,309.05/x - Step 3: Cross multiply
278,993.08x = 418,426.73 × 79,309.05 - Step 4: Simplify right side
278,993.08x = 33,185,026,450.91 - Step 5: Solve for x
x = 33,185,026,450.91/278,993.08 - Step 6: Final answer
x = 118,945.70
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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.