Finding the Fourth Proportional to 207,722,498.20, 311,583,747.30 and 86,538,203.80
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Solution
The fourth proportional to 207,722,498.20, 311,583,747.30 and 86,538,203.80 is: 129,807,305.70
Step by Step Solution
- Step 1: Write the proportion equation
207,722,498.20 : 311,583,747.30 = 86,538,203.80 : x - Step 2: Convert to fraction form
207,722,498.20/311,583,747.30 = 86,538,203.80/x - Step 3: Cross multiply
207,722,498.20x = 311,583,747.30 × 86,538,203.80 - Step 4: Simplify right side
207,722,498.20x = 26,963,897,824,615,100 - Step 5: Solve for x
x = 26,963,897,824,615,100/207,722,498.20 - Step 6: Final answer
x = 129,807,305.70
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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.