Finding the Fourth Proportional to 987,206.21, 1,480,809.33 and 239,252.21
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Solution
The fourth proportional to 987,206.21, 1,480,809.33 and 239,252.21 is: 358,878.32
Step by Step Solution
- Step 1: Write the proportion equation
987,206.21 : 1,480,809.33 = 239,252.21 : x - Step 2: Convert to fraction form
987,206.21/1,480,809.33 = 239,252.21/x - Step 3: Cross multiply
987,206.21x = 1,480,809.33 × 239,252.21 - Step 4: Simplify right side
987,206.21x = 354,286,902,940.11 - Step 5: Solve for x
x = 354,286,902,940.11/987,206.21 - Step 6: Final answer
x = 358,878.32
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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.