Finding the Fourth Proportional to 278,229.74, 383,965.73 and 157,368.67
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Solution
The fourth proportional to 278,229.74, 383,965.73 and 157,368.67 is: 217,173.68
Step by Step Solution
- Step 1: Write the proportion equation
278,229.74 : 383,965.73 = 157,368.67 : x - Step 2: Convert to fraction form
278,229.74/383,965.73 = 157,368.67/x - Step 3: Cross multiply
278,229.74x = 383,965.73 × 157,368.67 - Step 4: Simplify right side
278,229.74x = 60,424,176,255.68 - Step 5: Solve for x
x = 60,424,176,255.68/278,229.74 - Step 6: Final answer
x = 217,173.68
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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.