Finding the Fourth Proportional to 399,373,483.52, 551,190,157.44 and 229,824,236.96
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Solution
The fourth proportional to 399,373,483.52, 551,190,157.44 and 229,824,236.96 is: 317,188,953.65
Step by Step Solution
- Step 1: Write the proportion equation
399,373,483.52 : 551,190,157.44 = 229,824,236.96 : x - Step 2: Convert to fraction form
399,373,483.52/551,190,157.44 = 229,824,236.96/x - Step 3: Cross multiply
399,373,483.52x = 551,190,157.44 × 229,824,236.96 - Step 4: Simplify right side
399,373,483.52x = 126,676,857,353,510,288 - Step 5: Solve for x
x = 126,676,857,353,510,288/399,373,483.52 - Step 6: Final answer
x = 317,188,953.65
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.