Finding the Fourth Proportional to 402,971.76, 556,083.50 and 221,672.20
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Solution
The fourth proportional to 402,971.76, 556,083.50 and 221,672.20 is: 305,897.99
Step by Step Solution
- Step 1: Write the proportion equation
402,971.76 : 556,083.50 = 221,672.20 : x - Step 2: Convert to fraction form
402,971.76/556,083.50 = 221,672.20/x - Step 3: Cross multiply
402,971.76x = 556,083.50 × 221,672.20 - Step 4: Simplify right side
402,971.76x = 123,268,252,828.70 - Step 5: Solve for x
x = 123,268,252,828.70/402,971.76 - Step 6: Final answer
x = 305,897.99
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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.