Finding the Fourth Proportional to 392,258,415.80, 588,387,623.70 and 256,209,519.80
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Solution
The fourth proportional to 392,258,415.80, 588,387,623.70 and 256,209,519.80 is: 384,314,279.70
Step by Step Solution
- Step 1: Write the proportion equation
392,258,415.80 : 588,387,623.70 = 256,209,519.80 : x - Step 2: Convert to fraction form
392,258,415.80/588,387,623.70 = 256,209,519.80/x - Step 3: Cross multiply
392,258,415.80x = 588,387,623.70 × 256,209,519.80 - Step 4: Simplify right side
392,258,415.80x = 150,750,510,524,440,128 - Step 5: Solve for x
x = 150,750,510,524,440,128/392,258,415.80 - Step 6: Final answer
x = 384,314,279.70
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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.