Finding the Fourth Proportional to 278,787.66, 384,745.99 and 157,929.93
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Solution
The fourth proportional to 278,787.66, 384,745.99 and 157,929.93 is: 217,954.09
Step by Step Solution
- Step 1: Write the proportion equation
278,787.66 : 384,745.99 = 157,929.93 : x - Step 2: Convert to fraction form
278,787.66/384,745.99 = 157,929.93/x - Step 3: Cross multiply
278,787.66x = 384,745.99 × 157,929.93 - Step 4: Simplify right side
278,787.66x = 60,762,908,908.69 - Step 5: Solve for x
x = 60,762,908,908.69/278,787.66 - Step 6: Final answer
x = 217,954.09
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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.