Finding the Fourth Proportional to 201,688.99, 278,416.95 and 143,583.23
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Solution
The fourth proportional to 201,688.99, 278,416.95 and 143,583.23 is: 198,206.19
Step by Step Solution
- Step 1: Write the proportion equation
201,688.99 : 278,416.95 = 143,583.23 : x - Step 2: Convert to fraction form
201,688.99/278,416.95 = 143,583.23/x - Step 3: Cross multiply
201,688.99x = 278,416.95 × 143,583.23 - Step 4: Simplify right side
201,688.99x = 39,976,005,125.35 - Step 5: Solve for x
x = 39,976,005,125.35/201,688.99 - Step 6: Final answer
x = 198,206.19
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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.