Finding the Fourth Proportional to 283,197.21, 390,803.99 and 155,870.07
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Solution
The fourth proportional to 283,197.21, 390,803.99 and 155,870.07 is: 215,096.20
Step by Step Solution
- Step 1: Write the proportion equation
283,197.21 : 390,803.99 = 155,870.07 : x - Step 2: Convert to fraction form
283,197.21/390,803.99 = 155,870.07/x - Step 3: Cross multiply
283,197.21x = 390,803.99 × 155,870.07 - Step 4: Simplify right side
283,197.21x = 60,914,644,498.23 - Step 5: Solve for x
x = 60,914,644,498.23/283,197.21 - Step 6: Final answer
x = 215,096.20
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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.