Finding the Fourth Proportional to 421,091.36, 581,113.68 and 230,112.80
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Solution
The fourth proportional to 421,091.36, 581,113.68 and 230,112.80 is: 317,559.82
Step by Step Solution
- Step 1: Write the proportion equation
421,091.36 : 581,113.68 = 230,112.80 : x - Step 2: Convert to fraction form
421,091.36/581,113.68 = 230,112.80/x - Step 3: Cross multiply
421,091.36x = 581,113.68 × 230,112.80 - Step 4: Simplify right side
421,091.36x = 133,721,696,023.10 - Step 5: Solve for x
x = 133,721,696,023.10/421,091.36 - Step 6: Final answer
x = 317,559.82
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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.