Finding the Fourth Proportional to 278,785.41, 418,115.07 and 128,943.48
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Solution
The fourth proportional to 278,785.41, 418,115.07 and 128,943.48 is: 193,386.06
Step by Step Solution
- Step 1: Write the proportion equation
278,785.41 : 418,115.07 = 128,943.48 : x - Step 2: Convert to fraction form
278,785.41/418,115.07 = 128,943.48/x - Step 3: Cross multiply
278,785.41x = 418,115.07 × 128,943.48 - Step 4: Simplify right side
278,785.41x = 53,913,212,166.24 - Step 5: Solve for x
x = 53,913,212,166.24/278,785.41 - Step 6: Final answer
x = 193,386.06
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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.