Finding the Fourth Proportional to 313,465.16, 470,197.74 and 76,805.79
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Solution
The fourth proportional to 313,465.16, 470,197.74 and 76,805.79 is: 115,208.69
Step by Step Solution
- Step 1: Write the proportion equation
313,465.16 : 470,197.74 = 76,805.79 : x - Step 2: Convert to fraction form
313,465.16/470,197.74 = 76,805.79/x - Step 3: Cross multiply
313,465.16x = 470,197.74 × 76,805.79 - Step 4: Simplify right side
313,465.16x = 36,113,908,876.91 - Step 5: Solve for x
x = 36,113,908,876.91/313,465.16 - Step 6: Final answer
x = 115,208.69
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1.5x scale
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.