Finding the Fourth Proportional to 315,340.74, 435,018.86 and 206,397.12
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Solution
The fourth proportional to 315,340.74, 435,018.86 and 206,397.12 is: 284,728.95
Step by Step Solution
- Step 1: Write the proportion equation
315,340.74 : 435,018.86 = 206,397.12 : x - Step 2: Convert to fraction form
315,340.74/435,018.86 = 206,397.12/x - Step 3: Cross multiply
315,340.74x = 435,018.86 × 206,397.12 - Step 4: Simplify right side
315,340.74x = 89,786,637,874.04 - Step 5: Solve for x
x = 89,786,637,874.04/315,340.74 - Step 6: Final answer
x = 284,728.95
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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.