Finding the Fourth Proportional to 421,474.16, 631,545.40 and 342,201.08
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Solution
The fourth proportional to 421,474.16, 631,545.40 and 342,201.08 is: 512,761.01
Step by Step Solution
- Step 1: Write the proportion equation
421,474.16 : 631,545.40 = 342,201.08 : x - Step 2: Convert to fraction form
421,474.16/631,545.40 = 342,201.08/x - Step 3: Cross multiply
421,474.16x = 631,545.40 × 342,201.08 - Step 4: Simplify right side
421,474.16x = 216,115,517,949.03 - Step 5: Solve for x
x = 216,115,517,949.03/421,474.16 - Step 6: Final answer
x = 512,761.01
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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.