Finding the Fourth Proportional to 201,948.80, 278,710.08 and 121,402.40
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Solution
The fourth proportional to 201,948.80, 278,710.08 and 121,402.40 is: 167,547.78
Step by Step Solution
- Step 1: Write the proportion equation
201,948.80 : 278,710.08 = 121,402.40 : x - Step 2: Convert to fraction form
201,948.80/278,710.08 = 121,402.40/x - Step 3: Cross multiply
201,948.80x = 278,710.08 × 121,402.40 - Step 4: Simplify right side
201,948.80x = 33,836,072,616.19 - Step 5: Solve for x
x = 33,836,072,616.19/201,948.80 - Step 6: Final answer
x = 167,547.78
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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.