Finding the Fourth Proportional to 438,809.80, 658,214.70 and 106,385.80
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Solution
The fourth proportional to 438,809.80, 658,214.70 and 106,385.80 is: 159,578.70
Step by Step Solution
- Step 1: Write the proportion equation
438,809.80 : 658,214.70 = 106,385.80 : x - Step 2: Convert to fraction form
438,809.80/658,214.70 = 106,385.80/x - Step 3: Cross multiply
438,809.80x = 658,214.70 × 106,385.80 - Step 4: Simplify right side
438,809.80x = 70,024,697,431.26 - Step 5: Solve for x
x = 70,024,697,431.26/438,809.80 - Step 6: Final answer
x = 159,578.70
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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.