Finding the Fourth Proportional to 318,947,105.99, 440,147,302.89 and 172,269,389.99
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Solution
The fourth proportional to 318,947,105.99, 440,147,302.89 and 172,269,389.99 is: 237,731,918.40
Step by Step Solution
- Step 1: Write the proportion equation
318,947,105.99 : 440,147,302.89 = 172,269,389.99 : x - Step 2: Convert to fraction form
318,947,105.99/440,147,302.89 = 172,269,389.99/x - Step 3: Cross multiply
318,947,105.99x = 440,147,302.89 × 172,269,389.99 - Step 4: Simplify right side
318,947,105.99x = 75,823,907,374,604,064 - Step 5: Solve for x
x = 75,823,907,374,604,064/318,947,105.99 - Step 6: Final answer
x = 237,731,918.40
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1.5x scale
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.