Finding the Fourth Proportional to 278,810.42, 418,214.84 and 79,130.99
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Solution
The fourth proportional to 278,810.42, 418,214.84 and 79,130.99 is: 118,696.25
Step by Step Solution
- Step 1: Write the proportion equation
278,810.42 : 418,214.84 = 79,130.99 : x - Step 2: Convert to fraction form
278,810.42/418,214.84 = 79,130.99/x - Step 3: Cross multiply
278,810.42x = 418,214.84 × 79,130.99 - Step 4: Simplify right side
278,810.42x = 33,093,751,835.16 - Step 5: Solve for x
x = 33,093,751,835.16/278,810.42 - Step 6: Final answer
x = 118,696.25
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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.