Finding the Fourth Proportional to 320,857.14, 442,461.69 and 213,431.70
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Solution
The fourth proportional to 320,857.14, 442,461.69 and 213,431.70 is: 294,322.11
Step by Step Solution
- Step 1: Write the proportion equation
320,857.14 : 442,461.69 = 213,431.70 : x - Step 2: Convert to fraction form
320,857.14/442,461.69 = 213,431.70/x - Step 3: Cross multiply
320,857.14x = 442,461.69 × 213,431.70 - Step 4: Simplify right side
320,857.14x = 94,435,350,681.57 - Step 5: Solve for x
x = 94,435,350,681.57/320,857.14 - Step 6: Final answer
x = 294,322.11
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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.