Finding the Fourth Proportional to 289,487.18, 434,124.16 and 99,899.19
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Solution
The fourth proportional to 289,487.18, 434,124.16 and 99,899.19 is: 149,811.99
Step by Step Solution
- Step 1: Write the proportion equation
289,487.18 : 434,124.16 = 99,899.19 : x - Step 2: Convert to fraction form
289,487.18/434,124.16 = 99,899.19/x - Step 3: Cross multiply
289,487.18x = 434,124.16 × 99,899.19 - Step 4: Simplify right side
289,487.18x = 43,368,651,693.68 - Step 5: Solve for x
x = 43,368,651,693.68/289,487.18 - Step 6: Final answer
x = 149,811.99
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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.