Finding the Fourth Proportional to 355,134.71, 489,964.34 and 202,134.62
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Solution
The fourth proportional to 355,134.71, 489,964.34 and 202,134.62 is: 278,876.59
Step by Step Solution
- Step 1: Write the proportion equation
355,134.71 : 489,964.34 = 202,134.62 : x - Step 2: Convert to fraction form
355,134.71/489,964.34 = 202,134.62/x - Step 3: Cross multiply
355,134.71x = 489,964.34 × 202,134.62 - Step 4: Simplify right side
355,134.71x = 99,038,757,409.70 - Step 5: Solve for x
x = 99,038,757,409.70/355,134.71 - Step 6: Final answer
x = 278,876.59
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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.