Finding the Fourth Proportional to 283,120.29, 390,689.76 and 155,795.88
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Solution
The fourth proportional to 283,120.29, 390,689.76 and 155,795.88 is: 214,989.38
Step by Step Solution
- Step 1: Write the proportion equation
283,120.29 : 390,689.76 = 155,795.88 : x - Step 2: Convert to fraction form
283,120.29/390,689.76 = 155,795.88/x - Step 3: Cross multiply
283,120.29x = 390,689.76 × 155,795.88 - Step 4: Simplify right side
283,120.29x = 60,867,854,966.19 - Step 5: Solve for x
x = 60,867,854,966.19/283,120.29 - Step 6: Final answer
x = 214,989.38
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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.