Finding the Fourth Proportional to 201,852.68, 278,569.14 and 112,428.68
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Solution
The fourth proportional to 201,852.68, 278,569.14 and 112,428.68 is: 155,158.51
Step by Step Solution
- Step 1: Write the proportion equation
201,852.68 : 278,569.14 = 112,428.68 : x - Step 2: Convert to fraction form
201,852.68/278,569.14 = 112,428.68/x - Step 3: Cross multiply
201,852.68x = 278,569.14 × 112,428.68 - Step 4: Simplify right side
201,852.68x = 31,319,160,698.94 - Step 5: Solve for x
x = 31,319,160,698.94/201,852.68 - Step 6: Final answer
x = 155,158.51
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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.