Finding the Fourth Proportional to 470,211.99, 649,091.20 and 317,457.10
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Solution
The fourth proportional to 470,211.99, 649,091.20 and 317,457.10 is: 438,224.92
Step by Step Solution
- Step 1: Write the proportion equation
470,211.99 : 649,091.20 = 317,457.10 : x - Step 2: Convert to fraction form
470,211.99/649,091.20 = 317,457.10/x - Step 3: Cross multiply
470,211.99x = 649,091.20 × 317,457.10 - Step 4: Simplify right side
470,211.99x = 206,058,607,882.06 - Step 5: Solve for x
x = 206,058,607,882.06/470,211.99 - Step 6: Final answer
x = 438,224.92
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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.