Finding the Fourth Proportional to 201,689.49, 278,417.64 and 143,583.74
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Solution
The fourth proportional to 201,689.49, 278,417.64 and 143,583.74 is: 198,206.88
Step by Step Solution
- Step 1: Write the proportion equation
201,689.49 : 278,417.64 = 143,583.74 : x - Step 2: Convert to fraction form
201,689.49/278,417.64 = 143,583.74/x - Step 3: Cross multiply
201,689.49x = 278,417.64 × 143,583.74 - Step 4: Simplify right side
201,689.49x = 39,976,243,923.17 - Step 5: Solve for x
x = 39,976,243,923.17/201,689.49 - Step 6: Final answer
x = 198,206.88
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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.