Finding the Fourth Proportional to 220,843,490.40, 331,265,235.60 and 147,185,767.80
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Solution
The fourth proportional to 220,843,490.40, 331,265,235.60 and 147,185,767.80 is: 220,778,651.70
Step by Step Solution
- Step 1: Write the proportion equation
220,843,490.40 : 331,265,235.60 = 147,185,767.80 : x - Step 2: Convert to fraction form
220,843,490.40/331,265,235.60 = 147,185,767.80/x - Step 3: Cross multiply
220,843,490.40x = 331,265,235.60 × 147,185,767.80 - Step 4: Simplify right side
220,843,490.40x = 48,757,528,047,233,904 - Step 5: Solve for x
x = 48,757,528,047,233,904/220,843,490.40 - Step 6: Final answer
x = 220,778,651.70
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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.