Finding the Fourth Proportional to 283,040.70, 390,595.59 and 155,715.99
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Solution
The fourth proportional to 283,040.70, 390,595.59 and 155,715.99 is: 214,887.75
Step by Step Solution
- Step 1: Write the proportion equation
283,040.70 : 390,595.59 = 155,715.99 : x - Step 2: Convert to fraction form
283,040.70/390,595.59 = 155,715.99/x - Step 3: Cross multiply
283,040.70x = 390,595.59 × 155,715.99 - Step 4: Simplify right side
283,040.70x = 60,821,979,184.39 - Step 5: Solve for x
x = 60,821,979,184.39/283,040.70 - Step 6: Final answer
x = 214,887.75
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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.