Finding the Fourth Proportional to 278,095.68, 383,791.68 and 157,238.13
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Solution
The fourth proportional to 278,095.68, 383,791.68 and 157,238.13 is: 216,999.72
Step by Step Solution
- Step 1: Write the proportion equation
278,095.68 : 383,791.68 = 157,238.13 : x - Step 2: Convert to fraction form
278,095.68/383,791.68 = 157,238.13/x - Step 3: Cross multiply
278,095.68x = 383,791.68 × 157,238.13 - Step 4: Simplify right side
278,095.68x = 60,346,686,072.76 - Step 5: Solve for x
x = 60,346,686,072.76/278,095.68 - Step 6: Final answer
x = 216,999.72
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.