Finding the Fourth Proportional to 310,042.11, 427,988.12 and 209,576.19
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Solution
The fourth proportional to 310,042.11, 427,988.12 and 209,576.19 is: 289,303.02
Step by Step Solution
- Step 1: Write the proportion equation
310,042.11 : 427,988.12 = 209,576.19 : x - Step 2: Convert to fraction form
310,042.11/427,988.12 = 209,576.19/x - Step 3: Cross multiply
310,042.11x = 427,988.12 × 209,576.19 - Step 4: Simplify right side
310,042.11x = 89,696,118,506.98 - Step 5: Solve for x
x = 89,696,118,506.98/310,042.11 - Step 6: Final answer
x = 289,303.02
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1.5x scale
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.