Finding the Fourth Proportional to 438,139.80, 657,209.70 and 188,821.80
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Solution
The fourth proportional to 438,139.80, 657,209.70 and 188,821.80 is: 283,232.70
Step by Step Solution
- Step 1: Write the proportion equation
438,139.80 : 657,209.70 = 188,821.80 : x - Step 2: Convert to fraction form
438,139.80/657,209.70 = 188,821.80/x - Step 3: Cross multiply
438,139.80x = 657,209.70 × 188,821.80 - Step 4: Simplify right side
438,139.80x = 124,095,518,531.46 - Step 5: Solve for x
x = 124,095,518,531.46/438,139.80 - Step 6: Final answer
x = 283,232.70
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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.