Finding the Fourth Proportional to 357,283.18, 535,517.09 and 143,914.45
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Solution
The fourth proportional to 357,283.18, 535,517.09 and 143,914.45 is: 215,707.45
Step by Step Solution
- Step 1: Write the proportion equation
357,283.18 : 535,517.09 = 143,914.45 : x - Step 2: Convert to fraction form
357,283.18/535,517.09 = 143,914.45/x - Step 3: Cross multiply
357,283.18x = 535,517.09 × 143,914.45 - Step 4: Simplify right side
357,283.18x = 77,068,644,075.79 - Step 5: Solve for x
x = 77,068,644,075.79/357,283.18 - Step 6: Final answer
x = 215,707.45
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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.