Finding the Fourth Proportional to 299,558,431.20, 449,337,646.80 and 251,185,490.40
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Solution
The fourth proportional to 299,558,431.20, 449,337,646.80 and 251,185,490.40 is: 376,778,235.60
Step by Step Solution
- Step 1: Write the proportion equation
299,558,431.20 : 449,337,646.80 = 251,185,490.40 : x - Step 2: Convert to fraction form
299,558,431.20/449,337,646.80 = 251,185,490.40/x - Step 3: Cross multiply
299,558,431.20x = 449,337,646.80 × 251,185,490.40 - Step 4: Simplify right side
299,558,431.20x = 112,867,097,166,640,000 - Step 5: Solve for x
x = 112,867,097,166,640,000/299,558,431.20 - Step 6: Final answer
x = 376,778,235.60
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1.5x scale
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.