Finding the Fourth Proportional to 286,790.10, 430,185.15 and 275,903.70
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Solution
The fourth proportional to 286,790.10, 430,185.15 and 275,903.70 is: 413,855.55
Step by Step Solution
- Step 1: Write the proportion equation
286,790.10 : 430,185.15 = 275,903.70 : x - Step 2: Convert to fraction form
286,790.10/430,185.15 = 275,903.70/x - Step 3: Cross multiply
286,790.10x = 430,185.15 × 275,903.70 - Step 4: Simplify right side
286,790.10x = 118,689,674,570.06 - Step 5: Solve for x
x = 118,689,674,570.06/286,790.10 - Step 6: Final answer
x = 413,855.55
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.