Finding the Fourth Proportional to 283,631.73, 391,419.99 and 156,315.53
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Solution
The fourth proportional to 283,631.73, 391,419.99 and 156,315.53 is: 215,719.95
Step by Step Solution
- Step 1: Write the proportion equation
283,631.73 : 391,419.99 = 156,315.53 : x - Step 2: Convert to fraction form
283,631.73/391,419.99 = 156,315.53/x - Step 3: Cross multiply
283,631.73x = 391,419.99 × 156,315.53 - Step 4: Simplify right side
283,631.73x = 61,185,021,232.34 - Step 5: Solve for x
x = 61,185,021,232.34/283,631.73 - Step 6: Final answer
x = 215,719.95
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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.