Finding the Fourth Proportional to 318,947,106.49, 440,147,303.58 and 172,269,390.49
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Solution
The fourth proportional to 318,947,106.49, 440,147,303.58 and 172,269,390.49 is: 237,731,919.09
Step by Step Solution
- Step 1: Write the proportion equation
318,947,106.49 : 440,147,303.58 = 172,269,390.49 : x - Step 2: Convert to fraction form
318,947,106.49/440,147,303.58 = 172,269,390.49/x - Step 3: Cross multiply
318,947,106.49x = 440,147,303.58 × 172,269,390.49 - Step 4: Simplify right side
318,947,106.49x = 75,823,907,713,543,600 - Step 5: Solve for x
x = 75,823,907,713,543,600/318,947,106.49 - Step 6: Final answer
x = 237,731,919.09
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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.