Finding the Fourth Proportional to 399,128.97, 598,868.75 and 209,545.28
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Solution
The fourth proportional to 399,128.97, 598,868.75 and 209,545.28 is: 314,409.96
Step by Step Solution
- Step 1: Write the proportion equation
399,128.97 : 598,868.75 = 209,545.28 : x - Step 2: Convert to fraction form
399,128.97/598,868.75 = 209,545.28/x - Step 3: Cross multiply
399,128.97x = 598,868.75 × 209,545.28 - Step 4: Simplify right side
399,128.97x = 125,490,121,923.04 - Step 5: Solve for x
x = 125,490,121,923.04/399,128.97 - Step 6: Final answer
x = 314,409.96
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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.