Finding the Fourth Proportional to 210,907.36, 316,388.88 and 77,881.12
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Solution
The fourth proportional to 210,907.36, 316,388.88 and 77,881.12 is: 116,831.96
Step by Step Solution
- Step 1: Write the proportion equation
210,907.36 : 316,388.88 = 77,881.12 : x - Step 2: Convert to fraction form
210,907.36/316,388.88 = 77,881.12/x - Step 3: Cross multiply
210,907.36x = 316,388.88 × 77,881.12 - Step 4: Simplify right side
210,907.36x = 24,640,720,329.95 - Step 5: Solve for x
x = 24,640,720,329.95/210,907.36 - Step 6: Final answer
x = 116,831.96
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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.