Finding the Fourth Proportional to 328,974,107.30, 493,457,356.62 and 79,980,775.08
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Solution
The fourth proportional to 328,974,107.30, 493,457,356.62 and 79,980,775.08 is: 119,970,237.70
Step by Step Solution
- Step 1: Write the proportion equation
328,974,107.30 : 493,457,356.62 = 79,980,775.08 : x - Step 2: Convert to fraction form
328,974,107.30/493,457,356.62 = 79,980,775.08/x - Step 3: Cross multiply
328,974,107.30x = 493,457,356.62 × 79,980,775.08 - Step 4: Simplify right side
328,974,107.30x = 39,467,101,851,395,568 - Step 5: Solve for x
x = 39,467,101,851,395,568/328,974,107.30 - Step 6: Final answer
x = 119,970,237.70
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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.