Finding the Fourth Proportional to 312,321.68, 468,669.12 and 286,911.94
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Solution
The fourth proportional to 312,321.68, 468,669.12 and 286,911.94 is: 430,539.33
Step by Step Solution
- Step 1: Write the proportion equation
312,321.68 : 468,669.12 = 286,911.94 : x - Step 2: Convert to fraction form
312,321.68/468,669.12 = 286,911.94/x - Step 3: Cross multiply
312,321.68x = 468,669.12 × 286,911.94 - Step 4: Simplify right side
312,321.68x = 134,466,766,437.29 - Step 5: Solve for x
x = 134,466,766,437.29/312,321.68 - Step 6: Final answer
x = 430,539.33
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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.