Finding the Fourth Proportional to 310,988.05, 429,295.92 and 209,072.62
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Solution
The fourth proportional to 310,988.05, 429,295.92 and 209,072.62 is: 288,609.23
Step by Step Solution
- Step 1: Write the proportion equation
310,988.05 : 429,295.92 = 209,072.62 : x - Step 2: Convert to fraction form
310,988.05/429,295.92 = 209,072.62/x - Step 3: Cross multiply
310,988.05x = 429,295.92 × 209,072.62 - Step 4: Simplify right side
310,988.05x = 89,754,020,603.23 - Step 5: Solve for x
x = 89,754,020,603.23/310,988.05 - Step 6: Final answer
x = 288,609.23
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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.