Finding the Fourth Proportional to 347,747,999.20, 521,621,998.80 and 245,711,327.20
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Solution
The fourth proportional to 347,747,999.20, 521,621,998.80 and 245,711,327.20 is: 368,566,990.80
Step by Step Solution
- Step 1: Write the proportion equation
347,747,999.20 : 521,621,998.80 = 245,711,327.20 : x - Step 2: Convert to fraction form
347,747,999.20/521,621,998.80 = 245,711,327.20/x - Step 3: Cross multiply
347,747,999.20x = 521,621,998.80 × 245,711,327.20 - Step 4: Simplify right side
347,747,999.20x = 128,168,433,621,864,800 - Step 5: Solve for x
x = 128,168,433,621,864,800/347,747,999.20 - Step 6: Final answer
x = 368,566,990.80
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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.